I 32/f have been talking to a redditor 31/m for 40 days and I discovered he's a luar

Okay, I'll try to make this as short as I can. I posted on r4r on 11th November seeking a life partner, that is, I'm looking for someone to marry. So a guy sent me a message and he's been great and I found that we were very compatible and he pointed out that he's a very honest and straightforward and he's looking for a long term relationship. He lives in London and he told me his name is (Let's say David). I even asked him about his photo or any form of communication other than Reddit. I had to make sure he's real but he said that it's too early to share photos with each other and that he's not here for sex or dirty work or anything. I truly respected him when he said that but honestly, he talked a lot about sex and what he likes and doesn't like and he flirts sometimes in a dirty way..It's been 40 days and I haven't seen any progress in this online thing. I mentioned that I'd like to add him on whatsapp and his reply was that he has no issue with it and that we should add each other in the next coming few days. So I waited. Just yesterday, I was going through the messages I got when I previously posted on r4r. I previously posted on r4r on 25th October but I deleted this post a while back and while I was going through my messages, I discovered that the exact same guy sent me a message as a reply to this old post saying that his name is (Steve) and he's from Dubai. The idiot forgot that he messaged me previously! I really don't know what to do. Should I confront him with it or just play dumb and quit this whole thing saying that I really don't feel comfortable talking to someone I don't know?

/r/relationship_advice Thread