spemat saidI am bisexual and am currently in a same sex relationship with a bisexual in Germany and just be careful.
The type of people that are the stereotype sadly have a place among bisexuals. None of my friends or I have the slightest bit of respect for those two timing, lying, types.... they do exist and they lie or are just in some really weird thing that is better described a questioning or just plain slut. I have had my heart broken by that type myself, go SLOW and be safe with that type sexually.
I only date bisexual men and women out of respect, Because of that scum, we have a bad rap. I know I just fall in love, I came out at 13 and my lesbian mom was much worse than my stepdad about it... one day a year or two before she died, she said one day, "fuck, I guess it isn't a phase. I believe in long term monogamous relationships and my boyfriend and I call ourselves bisexual regardless. Those scumbag types usually sell lies.... "I am attracted to both but only fall for men" and with women they are "straight" and they never date bisexuals because we see through that shit.
With that said, don't let the doubt ruin the fact that he may be genuine.
Speaking as another bi guy, I will second the above advice and add to proceed with caution.
There are two huge, disqualifying red flags for bi men:
1. Is he in a relationship with a woman? If he is, then leave. Life is too short to be the secret mistress.
2. Is he out? There's a world of difference between bi men who are out vs in the closet. I find the ones who are out to be the more honest, reliable ones.
If he is not attached to a woman and is out & honest about who/what he is, then your chances are no worse than with a gay guy.