relationship issues with pregnancy 😞

Ever since I found out I was pregnant with twins in September my relationship with my boyfriend has went down hill. He has a daughter and isn't ready for another kid none the less twins, but since I've seen both of these babies on my sono that's all I've been able to think about. I'm 25 these will b my first kids. He thinks I'm selfish for keeping them and I think he's selfish for asking me to do something he knows I'm against. We've been together for years so it's jus a real hard pill to swallow that I'm having to go thru this with someone I thought I shared the same love with. Everyone keeps telling me with TWINS I'm going to need a lot of support and it jus really breaks my heart to know I don't have support from the main person I need it from... sorry for venting u guys.