God bless you?
Psalms 2:12 "...Blessed are all they that put their trust in him."
We say, 'God bless you', not 'God blesses you', so I see the problem. 'God loves you' is an informative statement, similar to 'the teacher instructs us'; but 'God bless you' is a request for God to do that, in response to some behavior on the part of the other person. God bless you is a shortened version of May God bless you.