Desperate for advice with 2 year old son & boyfriend's relationship?

I have been dating my boyfriend very seriously now for over 10 months, he professed his love pretty soon into our relationship & it has felt all too right & perfect from the start. Though he has a long list of past gf's, I am the only girl he has ever loved & been in love with. His family adores me and wants us get married, as do we. He has moved a few things into my apartment & has been there 5 to 6 nights a week pretty much off the bat. I have a 2 year old son whom does not have a father, my bf has been the first & only man I have dated & allowed into our lives. My boyfriend & I want the same out of life, a happy thriving & loving family. He is a male so he has great expectations from males in general & my son can be rather clingy to me and wines a lot. My bf is feeling like an outsider now a days saying after all this time (days& weekends spent together) my son should not be as clingy or follow me around like he does and should want to go to my bf to play & just be with. I know my son might resent my bf for taking some attention from him & I understand this age can be tough in general (terrible two's) The problem is that im feeling very frustrated b/c now my bf has a bit of an attitude & is starting to distance himself from us, mainly my son. I understand it’s a lot for him & I credit him all the time for giving as much effort as he has. He has on several occasions recently said if he continues to feel like an outsider he cant be in this anymore & and that I can change it all. He says I hold the power to make my son stop following me & go to my bf more & that I should dicipline my son to cut back from wining as much (he does cry a lot for what seems like no reason at times) I really feel like my bf's unhappiness is due in part to his job loss in November, his family’s innocent but serious pressure & how happy he wants us to be but he just cant seem to get there. We want my son to look at the both of us as the same & go to either one happily. They have had plenty of full days spent one on one & time with all 3 of us, my bf says my son acts totally fine & fun when im not around, but when I get home my son tranforms into whinny & clingy, and this frutsrates my bf so much. (I know my son misses me) what can I do to not loose my boyfriend, stop my son from his wining/clinginess & stay as optimistic as I always have been...really stressed & upset :(