Imo, no it isn't normal. A lot of BL glorifies toxic relationship patterns because it's all fictional. But irl, a guy not letting his boyfriend have friends can isolate his partner and even inches quite close to what abusive partners do their spouses. On the other hand, I think it can happen that a spouse is uncomfortable with his boyfriend's relationship with his friend but instead of trying to force them apart it's something you'd want to talk through.
While I don't believe there is a right or wrong answer, personally, I would run the other way if someone is that jealous and or possessive. While I do understand that there are times that jealousy gets the best of you, I wouldn't be able to handle a person who was overly possessive and constantly jealous about every little thing. it would be just too emotionally exhausting. It would also depend on the relationship those two (or more) people have and the circumstances. In my opinion, a relationship is composed of two (or more) people bringing their life together and if they stop living each their own life someone will begin to feel suffocated and leave. You also have to keep in mind that healthy relationship is a thing that you don't always find in yaoi so don't use yaoi manga as examples of relationships because most yaoi is just plain fantasy (if someone is not old enough to understand that they should not be reading it). I think it is also a you live and you learn and being aware of what an unhealthy relationship is like. like emotional and physical abuse, being too dependent or too possessive or manipulating or being manipulated. meh something like that... ╮(￣▽￣)╭
Honestly in my opinion, it doesn't whether you're gay, straight, bisexual or a unicorn, the person you're going out with sure as hell doesn't have the right to outright ban you from hanging out with close friends or what not. It's a two way road, pal. Use that thing called communication (you know an basic human skill?) to talk to the douc- I mean lovely person to reach a decision without getting into a catfight over it like every other cliche yaoi tends to do.
Honestly, I always found that part of yaoi annoying ╮(￣▽￣)╭ Especially when it goes on and on for chapters. I stop reading the yaoi when either a) I know the couple is happy and it's in it's epilogue stage i.e. they start adopting or b) the drama becomes really and I mean REALLY repetitive. Hope this helps, probably didn't because I could care less for romance outside of manga (●'◡'●)ﾉ
Humm... I shouldn't be asking this, but I'll do it anyway. Lately, I've been noticed something in yaoi: sometimes the uke has friends (guys, most of time) and the seme start to feel jealous and push the uke away and then the uke starts to feel guilty because he made the seme feels bad.
Maybe is because I never had a boyfriend (like, I never told anyone but mom I'm gay, of course I don't have a boyfriend), but it's this normal? I mean, is a guy right to feel jealous because his boyfriend has a close friend? Or he is wrong and he should understand that the uke has the right of befriend with anyone the way he likes it?
I'm kind confused and I want to know your opinions.