Online dating can exciting but also risky.
Consider the following steps while trying to assess a date online. If you find a profile that interests you and he claims to like rom coms, then in all probability he will turn out to be a douche bag; better to dump him right away.
Look to see how many messages he sends or receives before suggesting a date. If they out number a few hundreds then sign him out. If they are very few then you could join him for a date.
Look to see if he has a job and a school degree and if he is living with his parents. If he does not, then flee the scene. Finally look for signs to see if he is a metro sexual or a gay. If it is ambiguous, then proceed with utmost caution.