My traveller boyfriend calls me his future wife

I met a man 6 weeks ago and it was an instantaneous attraction. We both felt it and there's no denying that those feelings are growing stronger now that we are getting to know each other better. He was honest with me from the start and told me that he was a single dad, 44 years old, never married and was brought up a traveller, although he now lives in a house. His values are solid and he is very moral and good. He has brought up his two biological children and his step-son on his own for the past 5 years as the mother ran off. He is a full time dad to his 3 boys and trains in the martial arts. He has been with 5 women his whole life and when I ask why he has never been married, he says that he knew they were not for him. He has started calling me his 'future wife' and until now, I have shrugged it off as a joke, but the other morning he took my face in his hands, looked deep into my eyes and said 'I have chosen you... you are my future wife... when a traveller picks a wife, it's for life'. I was in shock, but also felt on cloud nine. He is such a fantastic guy... he looks after his mum, his kids and trains really hard in martial arts. He's handsome, strong, caring and manly, like a man is supposed to be. He doesn't ask for much, just to be loved and respected and be happy in life (much like myself). We are from different worlds and there is a 19 year age gap... on paper, we just should not work, but why do I feel like I can't breathe without him? Not to be big headed, but I'm not short on soutars, but for some reason I can't see past this one. There is something almost magical about him and 'us' when we are together... Am I crazy? Can this ever work out? I have met his kids, he's met the important people in my life.... we see each other about 3 times per week. He stays at mine one night at the weekend and I stay at his. I work full time and do shift work, also don't drive, but he does. I'm happy with the way things are, but we miss eachother terribly when we are not together... I'm a bit confused... any thoughts would be appreciated. Especially if you are a traveller, or know of any as my experience is limited although I am learning about his culture although he mixes mostly with 'country' people now.