<human>: Summarize the given text in a few sentences.

My boyfriend (27/m) and I have been dating for just shy of 2 years and we do not currently live together. We get along great, have some similar interests and our values are the same. At around the 6 month mark, he started having doubts. We almost broke up at that time, but he couldn't bear the thought so we stayed together. Fast forward a year later, the same doubts resurface as I start asking future-oriented questions. I did not pressure him, I simply asked if he saw a future with us and that I wanted to marry him one day. Here are his doubts: Loves me but isn't sure it's the "forever" type of love, Not sure if he wants to marry me and Not sure if he can see us doing anything besides what we're currently doing (dating and living separately). 

We broke up 2 weeks ago but have been in constant contact since. He said he needs time to figure it out, he wants me but isn't certain and he's looking for certainty. He's only getting married once and he needs to be sure before he can 100% commit to this relationship. He's mentioned going to couples therapy and I told him I absolutely would, but only if he was serious about us. I don't want to waste time or emotion if we're not really trying to make it work. I told him I'd give him some time (like a month) to figure this out and to either be with me, or not. 

So reddit, have you ever faced doubts like this in your relationship, either as the doubter or the one on the receiving end of the uncertainty? How did you overcome it or did you just end the relationship? If it ended, did you regret it? Any advice is welcome.
<bot>: Boyfriend of nearly 2 years doesn't know if he can see himself marrying me. Do I end it or stick by him while he figures this out over the next few weeks? Are we doomed?