Now that's commitment.

• Me: I can't go to Zumba tomorrow night because of Mom's Birthday dinner. Oh! Or yoga! We can't go to yoga!
• Jeremy: Well I should be able to go next week. It will be good because I've got the 1/2 marathon on Sunday so I won't run on Monday.
• Me: So you WILL go with me again?
• Jeremy: Sure. I don't see why not. Unless I stop liking it or something.
• Me: So you'll keep going as long as you like it...
• Jeremy: Pretty much!