Hi! I'm a 23-year-old bisexual guy living in the UK. One month ago I met a male masseur and he did body-to-body massage to me and gave me a handjob at the end. 2 weeks after this event, I find a small painful spot on my left nipple. The masseur claimed that he was straight, and I'm quite sure he's telling the truth because when he was masturbating me he watched straight porn videos. And he said he only offered massage and refused my request of any kind of sexual activities even though I was willing to pay him much more money.(I mention this because it's been known that stds in heterosexual communities are rarer). My question is, did I have risk of catching syphilis or other STDs from this? I am quite scared when I learnt syphilis can be transmitted by skin-to-skin contact.