If he really liked you, he would want to speak to you in-depth, not in snippets.
Not in five word messages and ten second long pictures.
So that there was no record of how often he talks to you and how deep your conversations get.

Thought.is
That he wants attention from anyone who will give it, and not just you.
If he really liked you, then he would send you photographs he only wantedyouto see.
He would treat you differently than he treats everyone else.

He would give you more information about his life than he gives the strangers who follow him back.
If he really liked you, then he wouldnt talk to you over Snapchat and only Snapchat.
He would text you, so that he could re-read your messages whenever he missed you.

Thought.is
He would comment on your social media, so that the world could see how he felt about you.
To prove that he wanted to turn your flirtationship into an actual relationship.
He isnt serious about you.

He only wants to have some fun with you.