Resentment

Am
I'm wondering if anyone can help me with tips to prevent resentment in a long term relationship. The issue is that I'm ready for the big life events, marriage and kids, but my partner just never seems ready for anything. We are both 28 years old and have been together for 2-1/2 years. We have been living together for almost a year now and things feel like they should be moving forward, at least that's how I feel. We have had discussions on the topic a few times and it always seems to end the same. I tell him he is afraid of change and he thinks I want to rush everything. So, it appears we are at this stalemate and I'm just curious if any of you ladies have any advice on how I can proceed from here in a tactful manner so that I so not build resentment towards him. Truthfully, it's already started and I don't know what to do to stop it. Thank you!