Well love is when you like someone enough to die for them, to protect them, to spend as much time as possible for them. so if that is the way you feel about your guy then you are totally in love! good luck (; hope my advice helped.
If the person makes you really happy and you are willing to do anything to make them happy then you are in love. love is also when you get into an argument and you would rather stay and work it out than leave and be with anyone else.
You're most likely not in love. If this is your first boyfriend it's possible at a 2% chance. Nobody knows what love is anymore. Dating is just a kissing scene now. You will KNOW what love is. If you're questioning it, it's not love.