Why Can't I Get Off???

Yea so went to see Four Brothers at the movies yesterday (which was absolutely awsome might I add) wit my girl...Things went perfectly. We got Steak n Shake to go and ate dinner in bed. Then we jus cuddled up together in her warm bed and she feel asleep in my arms (or was it vice versa?) anyway, the next day (today) we woke up at 7 like always cuz she had to go to work and still had to take me home. But I decided that I would do somethin special for her.

Went down on her for a qwikie just because I wanted to make sure she started her day off great. Everything was goin according to plan. I could feel her body tense and pulse as my tounge moved and massaged her cunt. Then she came! I thought we would be done but she wanted to return the favor. So she takes off my pajama bottoms and black thong and starts to do the deed. It felt so good but I just couldnt come. So I figured it was because I had to pee and was holding back cuz I didnt wanna piss on her. So I go to the bathroom, come back and we picked up where we left off. It felt so good...I was almost there but I just couldnt come. It wasnt her fault but I just couldnt convince her of that. So we have to go because she couldnt be late for work.

I felt really bad because I kno she really wanted to get me off. She was pissed and she was about to cry. I kept telling her that it was really good, cuz it was I jsut didnt quite come is all. So this is the second time in a row that I didnt come so shes upset. I told her not to be cuz its not her fault. Nothing I say can convince her otherwise tho.

What should I do???