Does it feel weird to you when someone hearts your question but doesn't answer it?

Nope. ijust figure maybe it was the topic they like, or even that sometimes they might not want to say anything or even know what to say, but agree.

i heart lots i don't answer for the topic, and content alone.

I was so tempted to heart this one and not answer! 😏

If it's a girl, I just assume she wants to have sex with me. It gives it more meaning.

Sometimes you can read a post and understand where the poster is coming from.
That's worth a heart.
The only point in responding is if you can offer good advice they can use.

You mean like I just did with this one? ...... oh damn.. never mind...

I heart when I have nothing good to add.

Nope.