Wait, what? Is he still married?
No real caring boyfriend (or friend, for that matter) would allow a someone 5'3" to ride a bike built for a 6' tall person. That's wrong. You could have gotten seriously injured. Frugal is one thing - cheap to the point of recklessness is another.
And, as a runner myself, total props on 6 miles per day. That's no joke. As was said earlier, you are a rockstar.
I normally wouldn't say this - but I agree with everyone else. Dump the loser boyfriend, get a nice shiny new bike that you love, and celebrate the amazing person you are.
And, welcome to the TE forums. I really hope you stay on here so we can continue to support and cheer you on.

