Ok, so this guy I've been speaking to for a few weeks told me not so long ago he's in an on off relationship with someone. Although that same day he still showed signs of being interested in me.
I text him a few days later and got a reply although he made no effort to make further conversation, no questions or anything, so I left it.
A week later he texts asking me about something he'd seen me post online, I replied and again I then got a one word message back.
Why does he seem to text every so often but not put in any real effort to have a full conversation? My thoughts are that he's keeping me as an option in case this other thing doesn't work out.
What should I do?