Jealous friend

I am convinced that my bff is jealous of me....we both been with our boyfriends for over 7 years and while I been living with mine since day one and currently engaged ...she moved in with hers recently because she had No choice and is upset he never asked her to move in. My bf and I have recently started TTC so now shes been really standoffish and telling me *you guys are moving to fast , it's a lot to take in* ...we aren't children im 28 years old so it's not like I made this decision in a day. It just feels like she's never happy for me because it's NOT HAPPENING TO HER..we currently haven't spoken in a week and im so confused as to what to do with my wedding approaching...is she going to still be in the wedding or not....i feel bad and had reached out to her 2 bf in the past about taking the next step in their relationship..but he always says *next year or in 2 years* I feel like she's wasting her time since it's clear he's not ready...its causing rift in her and I relationship. It hurts even more because shes all i got. Everyone else has drifted apart from me....i don't know what to do ...i need your help girls.