Starter,
If I was anywhere near you I’d give you a friendly dope slap and say “SNAP OUT OF IT” – like Cher did to Nicholas Cage in Moonstruck. You are showing signs of dick size obsession. It’s okay. Many of us here have it to some degree. But what you have to watch out for is whether it interferes with your relationship with your girlfriend. Believe me: I lost the love of my life because I took an offhand comment she made and blew it into a dick size obsession. Don’t let it happen to you.
Dick size obsession can become a cancer that metastasizes into every aspect of your relationship. You can become a pathetic wretch who thinks everything is about your dick. She talks to other guys, and you think she wouldn’t be if you had a bigger dick. She gets mad, and you think she wouldn’t get mad if you just had a bigger dick. You have sex, and she has a great time and tells you so, but you have this lingering doubt inside that she would have a much better time if you had a bigger dick. Like RB says about Twatteaser, it will eat your soul. And whether you talk about it or not she will sense it, she will eventually become annoyed with you, and she will dump you like yesterday’s raisin bran.
Remember this: she likes you or she wouldn’t be with you. She’s not obsessed with dick size, so you shouldn’t be either. Stop talking about penis size with her. When she says she likes you — or loves you — believe it. And stop thinking about that damn 9X7 guy. Morph his face into a clown whenever you do, and figure he wasn’t that big anyway.*
Don’t stop doing PE. She likes your dick the way it is, and once you make your dick bigger she’ll like it then too.
Here’s a little cognitive psychology. With apologies to Stuart Smalley, I want you to say the following to yourself 50 times a day, or whenever you think about your girlfriend and your dick:
I’m long enough, I’m thick enough, and doggone it, she likes my dick.
*You ever hear that joke? Women can’t measure accurately because men are always telling them this much (hold thumb and index finger apart) equals seven inches.