Roxy is getting warmed up before you both go to the gym, she is doing some stretches and you quickly get side tracked by her massive tits. Roxy notices the bulge in your trousers and realises you have been looking at her cleavage while she has been stretching, luckily for you she is feeling pretty horny today and instructs you to take your dick out of your trousers and start wanking in front of her.