<human>: I am wondering if I have a problem in that I have a "thing" for the thought of breast implants. I don't like fake looking breasts necessarily, just bigger ones and the thought of them getting bigger. I have a great girlfriend with a killer body. She even has great large breasts. But I cannot stop fantasizing about the being bigger. Like, slightly more than my handful. I have had this type of fantasy my entire adult life. I don't like that I like it, but when I think about it, I get very, very turned on. It is just a fantasy.

I love my girlfriend and I would never bring this up with her. I hate the idea of what that can do to a person. I have nothing to change about her. I am going to propose soon, too. I don't even support plastic surgery very much. I mean, in cases of reconstruction or it affecting somebody's life or their own personal decision, more power to them. I just think surgery is a large health burden and expensive, and not to be taken lightly.

I guess I'm saying I think I should keep this fantasy a secret? Is it wrong for me to have this "thing"? Should I just ignore it forever? What should I do?

Summarize the given text in a few sentences.
<bot>: I have an unrealistic "thing" for breast implants but I would never want to even mention it to my girlfriend whom I love. How should I cope?