apathy in friendships

I consider myself someone compassionate and empathic most of the time, towards a lot of topics too. but when it comes to personal connections and friendships, I feel awfully unable to get attached to anyone, in fact, I get very uncomfortable when someone tries to get too close to me, I feel often incapable of feeling regret, sadness, or guilty for a relationship that I ended, most of the time, any of those feelings are mostly because a relationship I had affected *other* people, not myself or the person involved with me,,

does anyone feel like that? friendships are so hard to keep when you're just constantly uninterested in shit and you have to take it because you don't want to upset anyone...