How likely is it that a bi will enjoy the same sex experience enough to go totally gay/lesbian?

i don't think this happens, i think if a bisexual person was to get in a relationship with someone of the same gender then they may think they are gay or lesbian because they love their partner and don't want anyone else, however if their relationship was to go wrong then they would be open to dating both genders again.

It might be because they were gay all along but didnt realise it till the had same sex relationships, it opened their eyes and now they want to stay that way (:

I am in my first lesbian relationship. Im 33. Im not SUPER intrested in men right now but Im open to going back for the right one. I could see ppl going thru 'phases' like this.

Obviously, if you seek a fulfilling relationship with one person, then you will eventually have to choose. Also, just because someone is bi, doesn't mean they are going to continue to act on their attractions.

I think that bisexual people eventually make a choice between the two.