Search Results: should i keep flirting

so i’ll start from the beginning. this guy used to date one girl i knew. i met him because of that. but last year i ended a long relationship i had, and when she found out my ex was single, she flirted with him. it hurted me but i carried on with my life. anyways, a while ago, this guy she used to date started talking to me. at first i was kinda wondering why was he talking to me, but anyways, we talked like a lot. he told me a lot of things about his life, what he will study, etc. i was kinda liking him until one night like at 1 am he tells me that he liked talking to me and that i was interesting to him. i said the same about him. he told me he was going to sleep and wishes me a good night. he’s 18 years old by the way, and i’ll turn 18 next month. so, next day he didn't start the conversation. maybe it was because he read my texts before going to sleep. i waited a day and decided to answer to his instagram story that it was multiple photos of puppies, telling his followers that he was sad bc he couldn’t keep them. i answered with a good vibe text, like “they’re going to get adopted by a loving family” and more stuff showing support. so he read them but didn't answer. he has been online sometimes after that, it just doesn’t fit for me that he said a thing one day and then he does this. at first i was scared that his ex manipulated him when somehow she found out he was talking to me, but i don’t believe that honestly. i dont know if i should try again in a few weeks or what. pls could you give me some advice?

I found my boyfriend of 2 years has been cheating on me for 4 months today through his lover. So my boyfriend went for work placement abroad for 1 year and 7 months ago he met this girl at work and began flirting with her and asking her out but she said no because she knew about me. However, 4 months ago they began dating and having sex 4-5 times a week, he would stay at her place and also when they had sex he would finish in her because apparently she was trying to get pregnant from him. He also bought her some gifts and took her out to expensive restaurants. He returned home due to the virus, but he has been in contact with her for the past 2 weeks until she broke up with him and realised she passed him chlamydia. I am totally devastated I don’t know what to do, he claims he’s been having an affair with her due to the long distance but then why have sex with her and finish inside her, trying to get her pregnant? He keeps telling me it was purely sexual, but the girls also met his mother through FaceTime couple of times and he introduced her to his mum. He said he will never get back with her, but he’s due to return to the UK for work once the virus is over. I feel absolutely devastated and I don’t know if I should forgive him... while he was away he contacted me every single day and called me but I realised he went cold since he met her... what shall I do?