It definitely could be made more clear. I tried to convey that he was thankful for the chance to spend an afternoon with her and have her in his life, mostly just through context and facial expression - but it definitely could be communicated better.
I was trying out a lot of things at this point - like the lame pasted background in black and white. Thankfully I stopped doing that after only two strips.
What is he thanking her for? Is he thanking her for being cooperative, or what? That last panel could easily be extrapolated lol