Adultery - A Real Experience of Cuckold

Hi. I am 28, i work. And my gf and i share cuckold fantasies. To be precise she likes to fuck another being but only when she is real comfy with the guy. When we started all this was like an hunt. I msg om fb to her senior whom she had crush, luckily he was replying. And things got to cheesy between them. The guy met her many a times
But the thing between them happened once...