How does that affect your relationships, if at all?
Been meaning to come back to this Dexter, though you were maybe asking it more properly of N3o than me?

Might be TMI, might be a bit rambling mode, so bear with me . . . .
It's not without its difficulties. My ex was bi too. We got together on a swinging site where we'd got to know eachother on the forum over a few months, both putting ourselves down for a party hosted by a bi / transgender couple reputed to be pretty damn hardcore and feeling a need for some hand-holding knowing we might be out of our depths. That was when I first began to self-identify as bisexual at the ripe old age of 35. Pretty hard not to when pictures of you doing something quite intimate with a good-looking CD appear on the internets over subsequent days.
Anyways, the fuck buddies thing became more of a genuine relationship over time, and we were both still able to give expression to our bi sides by attending parties and massive socials where there'd be an after party with people we knew and were happy playing with together. That was enough for me, but over time we started to attend less frequently, mainly because the green-eyed monster thing had started to raise its ugly head. My other half clearly wasn't comfortable sharing me anymore after a while. We still occasionally went out, but she wasn't comfortable with anyone I'd known socially or sexually before we got together, and I didn't fancy anyone in her circle, so there was less playing even when we did.
It started to become more of an issue for me. She seemed able to just drop her bisexuality preferring a life of cosy heterosexual domesticity, but I've not explored mine nearly enough. I was just getting started after coming to acceptance of it so late in life, she'd explored most of her limits before we got together so wasn't nearly so arsed. We still made attempts at putting meets together, but half-heartedly, because the people I actually wanted to meet knowing I was comfortable exploring my sexuality with them were out of bounds, and I can't just fuck anyone. There needs to be a connection. She was insisting more on random partners and that doesn't work for me. Nothing came of anything.
I think the problems I had towards the end of the relationship had a lot to do with the feeling that I'd been sold a pup, in that I'd hoped to be able to explore things together with someone who understood, but instead I just felt more and more limited. Attempts to 'play act' bisexual sex, like playing with roles and sub/dom stuff just didn't work, cos the head-space isn't anything like the same as sex with another man. I started looking for prospective partners on my account, that I could play with independently, though never acted on anything cos I wouldn't cheat on her. That was a warning sign for me that the problem was getting over big. The lessening of my heterosexual desire for her being more and more in full-on bi mode the longer this went on, dealing with that by pretending to be almost asexual, was probably one of the nails in the coffin as far as the relationship went, though not the only one by any stretch. My drug and alcohol issues were bigger ones by far, but even so, the above is still plenty significant for me, if not for her.
It's hard being in a relationship when your sexuality moves back and forth, only able to give expression to one side of it. I don't know what happens now, whether I just take advantage of opportunities that come my way now I'm single and see if I can work this out of my system, which may well happen, who knows, before embarking on another relationship or what? Difficult.