<human>: My GF and I have been together for 7 years. I love her and our sex life is decent. The issues being that she almost never initiates and we are currently averaging once per week. I'd like to be at 2-3 times per week with her initiating 2-3 per month. Aside from that we get along great and I could see myself spending the rest of my life with her.

She was my first and only, and for a while now I haven't been able to shake the feeling that I've missed out on a part of life. I want to know what its like to sleep with other people and I don't know what to do about it.

I really don't want to hurt her so I haven't talked to her about the feeling of wanting to sleep with other people, but I've been holding it in for a year and the feeling isn't going anywhere. Emotionally things are great with my GF. The issue here is honestly just a physical one. I just want to have sex with other people.

So do I bring this up with her? If so, how?

Side note - I had not slept with people before my current GF due to personal beliefs that I no longer identify with.

Could you distill the essence of the text into 1-3 sentences?
<bot>: I've been with my GF for 7 years. She was my first and I'm thinking constantly about what it would be like to sleep with other people. What do I do?