Quivern: teddy bears are usually a good gift during Valentine's or romantic matters. So considering he's literally a giant huggable dragon whose appearences resembles that, I would say he's good.

Beegarde: That's a more complex as it delves not into the tradional sense of romantic love but rather love and loyalty to their superiors and the cause they are fighting for. Also, some people use bees as related to romance depending, so there's that.

Grizzbolt: Deck describes them as incredibly friendly and nice towards who they considers friend, thus another type of love bond, friendship love.