Is MMF a gateway to being bi?

My first MMF helped me realize I had a definite SPH fetish. No direct sexual connect between me and the other guy but I was totally aroused by the sight of his far bigger cock and the fact my gf saw it too. During a subsequent hookup with a completely different guy who was bi ( although he preferred women) he pushed his huge cock up against my baby dick and I almost came there and then.

 

Our brains are complicated, if that what it takes to get you to wrap your mind around sucking a guy off then sure think of it as a gateway. For someone else it might be porn that gets them there. For me I always have had the desire to suck a guys cock. That grew to wanting to be more intimate with a guy.

 

For me, I think it would be a gateway, I am very bi curious but I think my first time would be in a MMF situation.

 

I suppose it's a gateway but it's not always the case. For almost 20 years all I'd ever done with other guys is suck each other's cocks and we were both very satisfied and pleased with the results. Accepting anal sex for me came about much later on in life.

 

Never had one but probably one of my biggest fantasies being inside a woman while a man is inside me. Kissing the back of my neck while they cum inside me and me cumin inside that pussy in return

 

I don't think so, I had sex with both girls and boys before I had my first threesome.