There should be a separation standard to this server. It's not appropriate for an older player to have outwardly romantic rp with a minor, where to draw the line on that is debatable.
The few relationships i've had in character have been with good friends and the nitty gritty shit was kept to an ooc agreement minimum, I think its playing with fire to allow anything more.
A 20 year old spending significant time alone with a 14 year old should be viewed with the same scrutiny in roleplay/discord as if they were alone together in a park.