My son's rugby friend

Do not know if I has lost my mind ...... but my fantasy is to sleep with my son's best friend. He is at uni and his best friend is the rugby captain. After being recently divorced I have been a bit more free/adventurous. Last week my son and his best friend (Sam) stayed at my place as they were going to a nearby festival. Sam is very strong and muscular, and makes no secret of being a serial dater/one-night-stander. He is very fit and I can tell he likes me. Last week I teased him a lot by wearing tight yoga pants and a sports bra as I pretended to work out at home. He was clearly looking and admiring. I also brushed against him a few times. My fantasy he came up to my bedroom whilst my son was asleep and we had raw raw sex!!