Side character than can become dateable only through interaction with known friends.
Exceedingly nice (perhaps too nice) guy that will build up people who spend time talking to him. Often shares too much information and sometimes says inappropriate things. Highly and accidentally flirtatious (and often unaware of it). High friendship and frequent interaction with him increases romantic interaction options with known friends and can provide helpful romantic information on friends. Sometimes says awkward things and will draw back if the character starts getting hostile or mean. Negative relationship will decrease romantic interactions with known friends. Will excessively bother people who do spend time talking to him--to the point of sometimes interrupting romantic potential with others at inopportune moments (specifically with those he is not friends with). Once friendship is made, is incredibly loyal and can be used to interact with others (and mess-up competition relationships). Can be made dateable by becoming close friends with his close friends, but takes much time and effort and lots of conversation at weird times of day. Attempts before this will be ignored or unnoticed.
If made dateable by prolonged interaction and acceptance of flirtatious comments, interested romantically only in female characters.
Here's my selfie from which you can figure things out:
Background: Pretty normal guy but with long and bad dating history. Lots of bad dating situations and thus can sometimes give wise relationship advice. Doesn't like and doesn't like people who play with others emotions. Won't stand manipulation of others (especially friends). Currently enrolled in college. Fantasy fiction fan; giant computer game nerd. Loves to dance.