Dad - Could care less. He's pretty emotionally distant and into himself but very loving, so he just was like, "Okay. So, you know how... [rambles on about himself and his work]."
Mom - Pretty much fakes the support. When I came out to her, she said, "I've seen these people. It's not for you, I'm sorry." I started crying, like wtf is that? But, she goes along with it and has finally made an effort to refer to me as she, mommy (in front of my kids), and call me Chris instead of Christopher. Ironically, my girlfriend hates being a girl yet my mom keeps trying to force her to do girly things and buy her make up while I'm sitting next to her like, "Hi, I'd love for you to buy me that! Seriously??"
Brother - See dad lol.
Sister - At first I thought she was the best. She told my brother-in-law the night I came out to her, "I'm going to have a sister!." Flash forward 6 months or so, she comes over the other day and I asked her if her friends knew about my transition - we're going to a bday party for her with all our kids at Chuck-e-Cheese and I haven't seen her friends since I started. She starting talking about how everyone knew and was asking her, well what do I call him, her? Innocent enough. My sister's like, oh yeah I just told them HE's going by Michelle around HIS family ( she's technically my half-sister). This really upset me because one friend who was calling me a him, her has a FTM brother and I thought she might have corrected my sister in how to address me. I didn't let it show though and I just tried to joke, "Him, eh? Him? [laughing]." I guess that made my sister uncomfortable because she went off, "oh well anatomically you're still a boy. Just saying so. Plus I've know you for 24 years as a boy." So now I feel weird around her and her friends.
Girlfriend of 6 years who I have kids with - Totally cool with it now and wouldn't have it any other way. Took awhile though. She used to very transphobic and homophobic but she grew up in a very, very conservative Southern Baptist home.