Recently broke up with me because she didn’t feel loved. I told her that’s just not true

Why do you think that you know better how someone feels than the other person themselves?

Throughout our relationship, I considered dumping her a few times because I felt like I was settling at times, but I liked the comfortability and we got along.

So you actually weren't all that into her, but still think she was wrong feeling that she didn't feel loved?

But I truly do feel as though I was starting to come around to loving her properly. Maybe that’s my emotions thinking for me, though.

Depending on how long this has been going on, why would she wait around for something to happen if it's not even clear if it'll happen? Most people prefer being with someone who's sure about them.

I am 25, and I fear that my pool selection is getting thinner.

Ehm, wth????? If you were 35, okay. You've got ages my friend.

Everyone is marrying so young nowadays, it seems like there just aren’t enough women available.

Again, wth? Most people in Western countries that aren't overly conservative or religious marry in their late 20s or early 30s.