<human>: Can you give me the gist of the text in a nutshell?

My boyfriend and I met in college my freshman year and hit it right off. He is my first sexual partner and first serious boyfriend. We are living together and connect very well. We've been together for about 2 years.

When I got to college, I didn't have my sexual orientation pinned down but I knew it included females. I was struggling through the phases of how to ask a girl out, how to tell if they identify as a sexual minority, etc. But then I met my current boyfriend, I knew he was special, and things happened.

Whenever I think about my sexual orientation, I feel a little guilty for admitting that I would like to have a relationship with another chick. I brought up to my boyfriend that I would like to have a threesome, he seems open to it, but I don't know if I just want it so I can "test things out"/ satiate my desires. But that doesn't really seem fair for our third person.

 I just feel bad because I have this desire to have a girlfriend, like there's something right about that, but I obviously can't because I'm in a strong relationship that doesn't seem to crumble. So as much as I would like to test this side of me out, I feel blocked and I don't know what to do.

(My boyfriend does know about me liking girls, but doesn't know that I still struggle with desiring to have a relationship with one.)
<bot>: I'm in a strong relationship for about 2 years with my boyfriend, but before I met him I wanted to have a girlfriend. Now I can't but I still have desires to have a girlfriend.