Giving [m]y best [f]riend a blow job in his car

Quick background – Me, 23 F – 5'5, long dark hair, hour glass body – I'm a fitness instructor + my best friend, Cam, 28 M – 6'0, he's a runner.

Anyway – we are both single for the first time in years. Of course, I didn't know this when I met up with him yesterday. Meanwhile, I had broke up with my boyfriend about a month ago and I have been casually seeing other people, nothing serious. Cam is aware and has encouraged me with dating. I'm not gonna lie – Cam is hot and I have thought about him sexually since I became single. He was there for me when I was crying over my ex and he even stayed over one whole weekend with me. He literally took care of me when I didn't want to get up or anything. I thought it was all in my head at the time, but I felt we had some really hot moments with A LOT of sexual tension during this time. But neither of us did anything, since I was heartbroken and he was still in a relationship. We have never talked about it either.