I was thinking similarly to Enorah…sounds like he may have something more in mind. Unless he is gay, but garish wreaths and gay guys aren’t usually a match.
If you like this guy, I would leave the wreath up for awhile, relationships are more important than things. If you are not into him, and don’t care about the future of the friendship/relationship/whatever it is, then you could move it to the garage. If you do get involved with him, years later, he could still bring up the wreath incident during some argument. “Remember how you got rid of the wreath? You don’t like the gifts I get you!”
The other thing that does not make much sense is if he is coming over that frequently, one would think he might have greater observational skills regarding your home decor. Or, perhaps, you have confined him to the garden? Or is he a bit self-preoccupied? Or just clueless?