I promise I'll keep it short this time

I have a question about those who lack a sense of self, and their sexuality. I've always considered myself straight, I still do. Although, when I was around 14, I made a friend, and I really became close to him instantly, and thought he was the best friend I'd ever had. I stayed at his house, and he ended up reaching into my pants, and I didn't want to say anything, so I just let it happen, I hate confrontation and I avoid it at all costs.
A few years later, when I was around 18, I was using drugs, I wasn't around the best kinds of people at the time, but I have made bad decisions in the past. Anyways, a close friend was also with me, and on that night I initiated sex, not because I am gay, I'm not really sure why, but obviously the intoxication didn't help, although It was more to please him, because he was my friend, and obviously that would provide me with some security, I guess I struggled to see where the friendship boundaries were, and I just wanted him to value me.
Sometime last year, I had made some new friends, and I was getting quite close to an aquintances girlfriend, not romantically, but as a friend. Anyways, when we were drunk she suggested it would be "easier" if I was gay, because people wouldn't suspect something is going on between us two (people made the odd comment) and retrospectively I assumed it was because I was drunk, but I started questioning whether I was gay, and started looking at guys, and started imagining being with a guy, and it took me around a week or two afterwards (After I'd cut ties with them) to figure out I'm not gay at all, I guess I am very easily led, and I just want to fit in.
My question is, is this normal for people with BPD? I can understand that I didn't like to confrontation of wanting someone to stop what they were doing, but the other times it wasn't like that, it was my idea, in my head, or atleast what I felt at that time.
Can anyone relate to this, or shed some light?
