Not sure if you have a question here. Are you saying you're concerned about this? It could be you are having sex with someone you aren't all that into. It could be you masturbate so much you've fallen in love with yourself so much you just like you more than you like other people. It could be when you masturbate you can fantasize about being with anyone you want while with a partner they're never quite the ideal fantasy we have. It could be you've developed a fetish about the way you masturbate that you are unwilling to share with a partner to get the same high. Could be a lot of things, but if it bothers you, or you're feeling lonely because you only enjoy yourself, I guess you've got to stop masturbating. Then you'll be more ready and aroused when you have sex with someone else. It's an idea, anyway. The thing is, if you're not involved seriously with someone, there's no deep mental connection right now, maybe when you meet someone you do have that connection with you'll find that sex is more than just the orgasm. Peace.