<human>: Can you provide a brief overview of the text?

At my house with my girlfriend of the time. Laying in bed watching a movie when sexy times start to ensue. About half way through she finishes and wants me to finish. I suddenly can't stop thinking of that day earlier in school and whether or not I finished an assignment. No amount of refocusing helps and I lose it. She asks if anything is wrong and I decide to tell her, she laughs and says that's kind of pathetic. I silently scold myself and forget about it. About 30 minutes later I'm starting to get into the mood again and this time it a raging hard on and I really want to go at it but she refuses just to mess with me. 10 minutes of begging and I finally give up. I say I have to go to the bathroom and I'll be right back. I obviously proceed to fap. I come back to the room after about 5 minutes and she asks if I just fapped with a look on her face that says she totally fucking knows.
<bot>: Sexy time with girlfriend, mind wanders, lost the mood, got it back, she refuses, go fap, she knows..