I've found out that this bug is related to the locks; I've fixed it and will post it in the next update. It's certainly not because Althea acts cold towards possible love interests. How many are there? There are 4 people who can love Althea, but there can be several combinations such as Althea + Faustina + Delafield.
On the other hand, where did you say there is a loop with Drake? I haven't heard.