Pretending to Like You

1. Jealousy
Your accomplishments makes them insecure.
2. When discouraged
 They always make fun of your failures.
3. Conveniently friends?
They stick around if they need you to get things done and ignore you afterwards.

4. Ask for help

Just text them you need help but don't describe the kind of help and observe them.
5. Notice how often they break their promises
It could be that they only like your company but soon enough they may replace you.
6. Do they make you feel bad in front of others?
Making fun of you with sensitive topics that will hurt you shows how they careless.