I'm brand new here, been lurking and reading for a few days but your post inspired me to join so I could reply.
I've done both; met and was engaged to my now ex-husband within six months, married within a year - but we had a fairly happy nine year marriage which I don't regret.
My next partner I fell madly in love with almost on sight, would have laid down my life for him, introduced my children, etc., etc., we planned to marry and I somehow - stupidly - failed to realise that the relationship had turned abusive. It started happening about three/four months after we met (and we spent virtually all of our time together or on the phone). The first time he just pushed me roughly then locked me outside in the snow in my underwear. I forgave him. Second time was similar. But it was the mental abuse that was the worst and will take a long time to recover from. He stopped me being the person I really am. Stopped me wearing clothes I like, stopped me seeing friends and family, refused to take me out with him because he claimed I was embarrassing. He demanded to know where I was day and night (we lived a hundred miles apart). He made me cry more times than I can tell you. All of my friends and family begged me to leave. He continually broke up with me and then deigned to take me back. He was physically violent when it suited him, he called me terrible things. I often felt threatened and I lost all my confidence. I wasn't allowed to eat food the way I wanted, or even what I wanted. If I didn't like something he would cook it and pretend it was something else. He made derogatory comments about my make-up. clothes, shoes and made me reliant on his approval to wear something. I bet you're all wondering why I didn't leave! The answer is that I confused abuse and submission with respect for him and I genuinely loved him. I forgave him his faults and there were many times when we were blissfully happy. He was and is a very popular man, extremely intelligent and stunningly attractive. He's kind to others to a fault and is extremely generous. However I believe at heart that he's an abusive misogynist. He had a traumatic childhood which has left deep scars - which he doesn't recognise. Despite this I was mad about him, gave him 100s of £s and spent well into the thousands on/with him. At the time I believed that he had no money but I now think he was just having me on. On one occasion when I went back to him my friend burst into tears because she was so afraid for me. People downloaded information about abuse, and emailed me videos about it. I refused to listen and told myself they just didn't understand.
Eventually I put myself in a position where he I knew he would be refuse to be with me (told him I'd been unfaithful, which I hadn't) because I didn't have the strength to leave. The very next day I felt like a weight had been lifted and each day since I feel an excitement about my life now that I'm not being controlled and bullied by him.
I'm not for a second suggesting that your man is the same - but six weeks into my relationship with X I would have married him on the spot, no problem. I had total, overwhelming belief in our relationship. Just be cautious, be aware and look after yourself. xx