I've been with BF for 8 months. Lovely, lovely man who I'm very much in love with. We've taken it steady. Both late 30s with a child each. He is a man of few words, not brilliant at communicating feelings and has been through a lot in a previous relationship. We haven't said I love you yet - he knows I am feeling that way and I very strongly suspect he is too in his actions etc. all good.
I've noticed something curious though - he uses my words back at me sometimes! If I say 'you make me feel like I've won the lottery' he'll say ' you make me feel like I've won the lottery too' (not an actual quote, obviously 😂)
I sign off cards to him in a particular way, first one exchanged was Christmas and since then I've noted he has done it on my Christmas present and my valentines card!
It is something I've not come across, it feels slightly strange! Sweet but strange!