I dumped by bi GF - what do you think?

She told me that she was bi last weekend. At the time I was OK about it, but the more I thought about it, the more I was repulsed. She was very upset, so I tried to be as nice as possible. The thing is that one day I want to settle down with a girl and marry, or her be my Partner. I thus want a normal girl. I have no objection to gays, bi's, TS, TV's providing they are at arms length. She just telephoned me and was crying. I feel bad about it, but I just do not want to get involved with the whole gay thing.