What should I do?!

Hmm, why not give him a chance? Sounds like a good guy, you're not feeling comfortable could be because you're not ready to marry.... Could be he's doing something wrong, work it together and see why you're not comfortable. If you don't have someone that is.
If things still doesn't work out, try separating yourself from him by not answering his calls/messages, going out all the time and working, he will realize that he's not a part of your life anymore and after sometime he will give up.

I can't really give you good advice, because you didn't give us details, but tell him directly that you don't want to be with him and break off any contact that you have with him. The way he acts is not healthy, and he wont accept it unless you be really direct and stick to not contacting him at all. Ask for help from your parents, so that if needed they can refuse him, if he tries again something.

Mmmm i wish i hv boyfrnd like that

Since he's an ex, there must have been a reason that u guys broke off. If that's the case, do u still feel strongly enough for him to be tied together?

Hmm i think you should tell your ex u do not ♡ him

Send a video!!! The breakup one frm ryan higa (youtuber)

Well, I did it. I'm not answering his call. But, he'll always called me until my phone drop off. I'm even turn off my phone for a month because I don't want him to keep calling me. But, he'll keep sent me messages to my phone and when I'm turn it on my mail would be full because of his massage. He's too strong #－.－)

I did tell him that I don't want to be with him directly. And you know what he did? He cried, he told me that he's feeling comfortable with me and that's his reason to be with me. And I keep trying to find another excuses for him to leave me alone. But, it's always failed (￣∇￣")

At first I like to be treated like something precious to him. But now, I think he's too possessive to me even though I'm his ex. That's kinda scary now

I broke off with him because he's so possessive and even made me became unsociable. He would got angry just because I keep talking with another men. Even though the other men are just my professor from college or my friends. I'm too stressed to be with him. But I don't want to say some harsh word because his father is one of my professor from college that I admire

He must have been used to having things go his way.... are you his first gf though?

I assume that breaking off was a compromise between both you and him. I think it's seriously time to detach yourself from him especially if you are uncomfortable. Pls be extremely careful around you. Honestly, always have someone beside you if the situation is really extreme.

I'm not his first gf though. Well, maybe the second or the third . I'm not really sure. We broke off almost five months ago when I suggest it and he's aggreed it. But two months ago he suddenly proposed to me. Even though I reject him directly. Now, I don't really dare to go out myself. I'll keep my little bro with me and he know my condition perfectly

You experienced the exact same thing as me. The difference is it was my close friend. He kept on saying 'you do know that i like you, right?' Yeah ofc i know hes been saying that for years. And he keeps on singing 'lucky I'm in love with my best friend bla bla' to me. And he asked our friends to come to our wedding, like, who said I'm gonna marry you? It was during high school.
But you know, I'm a really straight forward person, I don't like him that way, so being a good friend that I am, I told him to fuck off '-')v

They'll get the message across if we tell him honestly without sounding like we're hesitating. I know it's gonna hurt, but it'll hurt even more if they thinks that there's a hope you know? Because we didn't reject them properly.

So I think you just have to tell him honestly. It's either hurt now or later. But it'll hurts more later, that's for sure. So just tell him already

Hah I had a possessive bf who don't want me to go anywhere unless I am going with him..he don't want me to do anything he gets angry if I am going out with my friend I couldn't have any male friend. Not even the one who were with me since I was in school. I dumped him. It became a burden when you couldn't do anything and can't have your own life hah. Σ( ￣□￣||). You reminded me of my bitter past. Be harsh I guess you are thinking if you will be harsh then he will get hurt. But if you want to get rid of him you have to completely and confidentaly set him through that you don't feel anything for him and don't want to be together don't melt down even if he cries. Because if you will became soft he will think there is a hope. It won't be good neither for him. Not for you

I think you're right. Maybe I sound like I'm hesitating because I don't want to hurt him. But I don't want to hurt myself anymore. I'll tell him honestly and really direct to reject him.

Yeah. You're right. Even my lil bro said that too. Thank you for your advice

Thank you all for your advices (⌒▽⌒)
I feel refresh now (=・ω・=)
I love you all (づ￣ ³￣)づ