Don’t know what to do/venting

I have been seeing a guy for about 3 years now. We have discussed everything and I know there is nothing we don’t know about each other but at this point I’m feeling kinda ignored/anxious/angry. We have talked about marriage, kids, etc. I would like to get married before having a child & he just wants a girl to be exact as he already has a grown son. I want to get married as my parents didn’t make it there and I would like to make it there with my person. I have learned so much from him and he has learned so much from me but it’s like why haven’t you asked me yet? Are you sure about me? You can’t tell me I’m this good woman I’m everything you’ve hoped for but you’re not moving us forward. What is the hold up? We do have an age gap between us but we are both ok with that but I’m starting to think is he ready to start his life over again and not be such a bachelor? Is he really ready this time to settle down? Does he want to settle down with me in particular? Does he need more time to sort himself out? I don’t think I have another two years to sit around and be patient for him to ask. I just don’t understand why he won’t take that next step with me as I’ve been there for all his ups and downs and vice versa. Why do men take so long to ask you to marry them? Do they not understand that a woman needs to feel secure in a relationship in order to feel comfortable and confident in it? At this point, it just feels like he is wasting my time and I really don’t like my time wasted as I have had that experience in the past and I don’t want to go through that again. I would rather be single, work on myself, and wait for the right person to come along and finally solidify everything. I’m just really upset that this whole thing feels like it’s coming to an end and that I’ve invested so much emotionally and financially in this whole thing. So one sided 😪😤🙄😔