I Have Had a Crush on my Friend

It's clear to me that if Timo is asking you if you're still keen, he either means are you still keen on him or are you still keen on your boyfriend. In either case, he's saying that he's interested in you. It would seem to me that Timo is shy. I say this because he didn't come out and say directly that he's free and keen on you. Rather he wants to know how you feel. Timo is also afraid of rejection.

Since we know that Timo is interested in you, the big question is what do you want to do with this information. Are you prepared to break up with your current boyfriend and go to Timo?

It's not my place to tell you what to do. If you have decided that you would rather be with Timo, then you would come up with a response that takes into account the fact that he's shy and afraid of rejection. You might consider a light and playful response, which would be non-threatening. You could say, "Are you asking if I'm still keen on you or if I'm still keen on my boyfriend? That should "flesh" him out and lead him to tell you directly that he's interested in you.

If you do break up with your current boyfriend, please make sure to be kind and considerate of his feelings. Let him leave the relationship holding his head high.

Let me know what happens.