New relationship after abuse

I was in an emotionally abusive/coercive relationship for most of my adult life. For the last few years I’ve done absolutely everything in my power to overcome this, I’ve done a lot of work and I’m really proud of the progress I’ve made. In this time I dated but never got into a relationship with anyone. I’ve been single for years and have focussed instead on feeling like a good person and being happy with what I’ve got.

Recently, I met someone who I really like and we’ve been dating now for a few months. Things are moving slowly but it’s probably not a bad thing considering all the problems I had in the past. Things have been SO easy but recently I’m starting to struggle a bit. This is the most serious I’ve been with anyone since that terrible relationship, its the longest I’ve dated the same person and I haven’t felt even close to this way about anyone else. I think I’m floundering a bit and I’m starting to worry that its all too good to be true and something will go wrong. My friends keep reassuring me (one of whom has been in the same situation) that it’s just a sticky patch, it’s normal after what I’ve been through and it will pass. I just don’t want to let this affect what I’ve got and all the progress I’ve made. I’m so off my game, I can’t concentrate at work and I feel so nervous.

This guy hasn’t done anything and I have spoken to him, he couldn’t do any more to reassure me. It’s just me and I always knew this was going to happen eventually. I’m being silly and I know I am. I’m just wondering if anyone has some real practical advice to get me over this hurdle? Thanks so much.