My Sexual Desires Overpowered Our Friendship 1/2

We were having a party at home as usual, but gradually the crowd dwindled and I was left alone with Yume. We had nothing to do, so we went to bed, and for some reason, I was horny… I was touching her body, but eventually she noticed my erect penis. Then I got a phone call from Yume’s boyfriend…. I got carried away and continued fucking Yume while she was on the phone! I was so excited that I had to keep my voice down so her boyfriend wouldn’t hear! After all, friendship between a men and a women is meaningless in front of sexual desire!