I adore my DP - we've been together for 3 years and as I'm a nearly 50 year old divorced single mum who is still having issues with tosser ExH, I'm more than happy that he's not wanting to move in or marry me. We just see each other for company a couple of times a week and for a proper night out and stay over at each other's houses a couple of times a month.
He's known from the start that my mum duties come first whatever happens and generally accepts that's the way it is. I've realised that if I want a 'normal' relationship (which I really don't at the moment!) then it's not going to happen with him, but that's absolutely fine with me as I don't want to have to share my lovely little house with a man, or move in with one, and can't see that changing!
We're definitely exclusive, all his friends are my friends and see us as a couple, we cook each other lovely meals and make plans to do things together in the months ahead. He never lets me down and is 100% reliable.
If it works for us, it's fine isn't it? Or am I kidding myself? Interested to hear other perspectives...