The person you think of with the question "does he love me too?" probably doesn't love you, because the lover never makes you think but makes you feel.
Yes. But I got two questions to ask you. First, is it more natural or more formal? I think it is not that common to say "the person of whom you think" in daily life. Second, why is 'saying' missing?
Yes, I agree 'of whom' makes it sound more formal. I have been trying to think of a less formal way, so suggestions are welcome! The problem with 'the person you think of saying "X" ' is that it is only grammatically correct if you think of a person who is saying X, not a person about whom you are thinking to say something.
Second, 'of whom you think to say' would mean you are actively considering actually saying this out loud, which seems a bit odd in this case - it would seem more natural that this is someone you have certain thoughts about.
It has just occurred to me I may be interpreting this in the wrong way - would this be what you mean?
The person you think of when you say (or: when saying) "does he love me?" probably doesn't love you, because the lover never makes you think but makes you feel.