Youve seen us men naked, right?
We are hairy apes who are built more for utility (grunt...move heavy rock I killed with bare hands) than aesthetics.
Despite our drooling over airbrushed and photoshopped "perfect" models in the media, we generally are more than happy when a woman shows us a little attention... So buy the cosmos for the sex tips (This Month: New Sex Tricks You Never Thought About in Church), not the pics... And leave your worries on the floor with your clothes as best you can.
The more you let this stuff in your head, the less likely you are to enjoy sex... Which means less likely to orgasm too. Which I think kind of sucks, since I think orgasms are not overrated. Wait... Uh... Yeah... Just checked. Definitely not overrated.
As for stretch marks. Dated a girl who had them from a pregnancy. While they are not something a guy puts on their "wish list", they never, ever stopped me from being in the moment sexually. Ever. I suppose I'm just a pig like that? Wait... Uh... Yeah... Just checked. I'm a pig like that.
The guy is with you. You. You. Ewe. Yoo. YOU. Stop trying to justify how you aren't going to be good enough. Confidence is sexy as hell. Put him to the wall, hold his wrists to the bed and he won't be thinking about that pimple on his butt. So why should you?
Look I know I can't just say get over it and *poof* its done. But head games are best left under the sheets and not in your mind.