Does this mean I'm strong? I'm confused?

So I'm 15, 5'10 and 235 pounds. I apparently look 160 pounds according to 3 people, asked independently and my friend who looks slightly thinner than me is 140. I also noticed after watching body building videos, I don't have vascular muscles, however I do have the "build" form on my shoulders, as in they look defined almost. I'm not all that athletic, I can run, and I can do 15 repetitions of 25 pounds consecutively standing up, doing it the proper way. So would I be considered at least a bit muscular, I'm not trying to look cool or anything, but I will ask a girl out and I want to at least know that if I need to, I can protect her. No one says I actually look 235, they were blown away when I told them I was 200+. So again, would I be strong enough to protect a girl if I were dating one?