i don't really think that Aiden being a dragon suddenly excuses him from needing to be decent to her. even though dragons don't really play by the same rules as humans, Wendy has expressed anger before when he kept important details from her, i think she even told him that she wouldn't tolerate any of that, yet he did it again. maybe she should've known, but it is not her fault for trying to give him another chance.
also it's clear from the dragon lord's reaction that Aiden is in the wrong. if to dragons there is really nothing wrong with nonconsensually messing with someone's life, i would expect that the lord would've been asking what her problem is rather than telling Aiden he messed up
granted, someone else mentioned that Aiden seems impatient for a reason, so i look forward to finding out what that is. I'm guessing it's something big (bc if it's not, then Aiden is a sweet guy but he is not a healthy fit for......anyone, frankly)