Confused and in Love

I am in love with the greatest man in the world. Our wedding is set for October 4 this year, but im still a little confused. I know he loves me more than anything in his life, but lately he hasn't wanted to spend anytime with anyone, including me. I've tried everything: talking to him, talking to his friends to see if anything was bugging him (but he hasnt even talked to them) He works 12 hour shifts at night and is usually really tired when he gets home, but he also has 3 days off a week and he just goes outside to help my uncle with siding, but last time our son wanted to go outside and after i got him ready and we went outside kevin was just sitting there, just talking to him, not even helping. When he's on break at work and i'm talking to him, he talks real "playful" and i've tried everything to keep him like that when he gets home, but nothing happens. Any Ideas????

Thanks alot, He comes home a 6 am (its 120 here) and i'll talk to him some more, any advice on what to say or how to start it?

I will definatly try that thanks alot!

Anyone else have anything feel free to tell me!