I want lesbian sex so bad

Sooo.. I have a boyfriend of like 4 years who I love very much and who I want to spend the rest of my life with.

However I absolutely LOVE lesbian porn and would love to have sex with a female.

I could look on tumblr all day at vaginas and females rubbing and licking each other's clits.

I would love to do that. I soo need to talk to someone else about it, surely I'm on the only one with this problem.

I don't want to be with a female or be in a relationship with one. I just want to have sex.

Is this wrong. I feel so bad, but even when I just think about lesbian sex my vagina starts pulsing and I get so horny.

What should I do?!