came to blows
Rather than alluding to a physical altercation, this much-more-benign past event was merely where a dude ejaculated from being sucked off.
I really liked da hot chick who attended da neighborhood barbecue, and so I asked her if she'd give me some head. She agreed, but since she'd arrived with another fellow, I avoided any potential unpleasantness by asking him if he was okay with dat. He gave his consent, and so da only thing dat "came to blows" was my cock inside said cutie's mouth.