What is this…?

I’m almost 25…..

I have almost everything I could think of..

A decent job

Great friends

A very supporting-loving boyfriend

But why do I feel like a depressed mess from seeing majority of my friends having getting engaged, married, and having babies…?? Especially when I’m the only one in my best friend group of 3 who’s not even close to being engaged….my boyfriend has told me he wants to marry but only if we move in. It sounds reasonable yet why do I feel like it’s not right of him to tell me that???? We’ve been together for a few years already….The only reason why I haven’t moved out is cause of caring for her after my dad’s death and my job…. Is what I’m feeling understandable? What is this crisis??? I don’t want to feel jealous , depressed, or anything but I do…anyone got any ideas? I hate this feeling.