So you like a like a guy or girl whole heartedly and are completely in love wih him/her. But you are not sure whether the person you have a crush on is interested in you or not. Often times it can be quite tricky to know whether the other person is reciprocating your feelings.
However there are some surefire signs you could look out for, which can tell you whether your crush likes you or not:
1. He or She Tries Talking to You – If your crush himself or herself tries to talk to you, to begin a conversation with you, it is surely a hint he/she might be interested in you. They may want to get to know more about you before getting into a relationship. Give them the opportunity to do so and always be ready to talk to him/her.
2. He or She Tries to Impress You – May be your crush got a hint you like him/her, that’s why he or she is trying to impress you. Things that come under this category are : Trying to laugh at your jokes, cracking jokes, winking at you, smiling at you and so on. Even if he/she stays close to you or does something nice for you, get the hint 
3. He or She Seems Possessive – If your crush acts a little possessive about you, or tries to defend you in almost every situation, these are surefire signs he or she is interested in you.
4. Gets Nervous Around You – If someone loves you, he/she will obviously try not to hurt you and in the process may start appearing a but nervous or anxious. These are signs to look out for. If your crush seems nervous, anxious or acts differently around you, may be he/she is into you.