SUBREDDIT: r/AskReddit
TITLE: Do I break up with him now to save heartache for both of us later even though I'm madly in love with him? :(
POST: I am in my early 30s, my boyfriend is in his late 20s. We have been together for a year and a half. He is wonderful and he truly is my everything. He's attractive, the sex is amazing, he's intelligent, supportive, etc.. seriously a dream catch. I am a super logical person and over analyze everything. Here's where I'm in my head.. We are discussing living together. The prospect of this coming to fruition is at least a year out. We have not yet discussed marriage, but there is no way proposal/wedding will come until at least 4 years from, best case scenario (he has certain credentials he wants to complete for his career first). It is very important to my bf that he has a family one day. By the time we may possibly enter marriage, I will be in my late 30s and I don't want to have children into my 40s. I'm scared that in a few years, he'll realize that he needs someone younger to give him what he wants in his life. What do I do? If I bring it up, he will tell me that he is making a conscious decision to be with me, but how can he know what he'll be feeling in 5 years from now?
TL;DR: 
I'm older than my boyfriend and am worried that he won't realize I'm too old to give him children until it's too late