Bit confused!

I’m 20 years old and currently single. Until a year and a half ago I was in a serious relationship with a guy for 3 years, which ended more or less when we both started university. Since then I haven’t had any other relationships, only a couple of one night stands (with guys).

I know for definite that I am not completely lesbian as I have had relationships with men in the past and am still attracted to men. However I think I might be bisexual. I think pretty much ever since I became sexually active I’ve thought about having sex with a woman and it’s something I regularly fantasize about; I even used to think about sex with women whilst sleeping with my ex-boyfriend, and I really want to be with a woman.

I have kissed girls before, but only in a stupid drunken ‘let’s kiss each other, this’ll be fun’ sort of way with friends (who are straight) when I was around 16/17.

The only reason I’m uncertain about this is that mainly when I think about this is it’s usually in a sexual way rather than a romantic way (if that makes sense) and I don’t know if maybe this is more just a sexual fantasy rather than me actually being bisexual. Having said that, I have on more than one occasion felt strongly attracted to girls I know, in the same way as I would be attracted to a guy I liked. I sort of feel like I want to just have sex with a girl to get it over with and see how I feel afterwards, to see if that makes things any clearer. I am really confused though.

To be honest, whilst I am really confused about this it’s not something that’s hugely bothering me as I know I would be completely comfortable with myself regardless of my sexuality, and I know that if I were to come out as bisexual my family and friends would all be supportive. At the same time I feel like if I were to explain to my friends how I’m feeling at the moment some of them might think that, as I am unsure and haven’t actually had a lesbian experience (other than kissing friends), that I’m just saying it for attention or something? I just hate this confusion because I feel as though I should know what I want and how I feel!

Sorry if this doesn’t make a lot of sense but any advice would be appreciated!