My gf and I wanted to start having sex. We're both virgins. So last night we tried, for a while i was so nervous i couldn't get it up. Eventually I do and try and stick it in, she's guiding it along. I probably get 1/2 of my head in. And she pulls it out. We try again, it hurts her too much and pulls it out. Third time i get my head in, try and go a little farther and again, the pain is too much for her and she pulls it out. Then she had to go home. She's telling me it feels like I'm ripping her in half. What do I do? Help us out guys.