<human>: My SO and I were close friends at University and began dating a year after graduation. We've been together 4 years now and have discussed marriage in broad stokes.

The issue we cannot get past is that I feel that marriage is supposed to be a commitment forever and he doesn't. I understand that people get divorced for good reasons and some relationships should end. I am happy to live my life with SO, unmarried, if he does not think he can commit to  the "forever" aspect. I'm not saying it's a guarantee that things will work out, but I don't want to marry someone who goes into it with an exit plan in mind.

Can you succinctly summarize the text in 1-3 sentences?
<bot>: I think marriage is a lifelong commitment and SO thinks divorce is a 50/50 chance for any couple. Is this resolveable?