I think don't over analyze it. you did something that may not seem normal to yourself but is typical. people ask to hang out with each other and only you can answer if you think it's a date. Because the only difference between hanging out as friends and going on a hangout date is the intention. If you were just thinking it would be cool to join him on biking and that's the idea you acted on, the fact you find him cute doesn't really matter so much.

I think most of us think to long and hard on these kinds of things and the supposed "rules" of relationships. don't.

Enjoy the ride and hopefully new friendship! see where that takes you but enjoy the ride no matter what.

congratulations on doing this in spite of being human and clueless on all the ins and outs of relationships and/or dating.