3 inch dick looking to learn how to keep a woman

I'm not a cuckold but by virtue of the fact that I have a 3 inch penis and have lost every girlfriend I've ever had, I want to learn how to keep a woman for once. My last several girlfriends have cheated with black guys in my condo complex. I have a reputation for having a small dick, so black guys with game line up to try and fuck my women. Even though I'm a handsome guy, black guys seem to have ALL the fame where I live. I want to learn from them how to successfully fuck and keep women.