one wanting ttc, one not...

I recently got divorced from the love of my life, I messed things up there. anyway my support buddy ended up falling in love with me and she is only 20 and she wants kids. my whole life's goal was to be a mom and now that im 35 I just don't feel the baby fever any more and I don't feel my heart is available to love her. so im taking a year break to heal and hopefully deal with the loss of my wife and develop feelings for this new lady. But what do I do about the difference in opinion for children, should I give it a go or should I stand firm on my placement on not wanting any. She is comfortable not having any but that's only because she will do anything to make me happy but I know deep down she is dying to have a baby. Im so torn and im hurting for this girl knowing all she will sacrifice for me.