She tried. She really did. You're just not big enough. Size matters and you're just not big enough to satisfy her. That's okay, though. She's going to cuckold you and you won't be fucking her anymore. Your cock doesn't deserve her pussy. That pleasure is reserved for men that can actually satisfy her. But, if you're a good boy, she'll reward you with a handjob every now and then. You'll have to earn it, of course - small dick boys don't get to cum whenever they want - but if you're a good cuck you'll get to feel her fingers wrapped around your little stiffy until you spill your load like a good boy. If you're wondering how to earn an orgasm, well, you just have to be a good cuckold. Help her find guys to fuck. Dress her for her dates. Clean the house and prepare the bedroom for their arrival. Buy condoms for him. Offer your mouth to fluff his cock before he fucks your beautiful girlfriend. Offer to help clean up afterwards in any way you can. Do that - and more - and she'll be sure to jerk you off and give that little dick of yours the orgasms you crave.