Answer:
You heard from someone and you were not sure.
Step-by-step explanation:
In case that you did knew about the situation but you are not telling that to Alexei, you need to come up with a plausible explanation. The best explanation is that you had heard of the situation briefly from a friend or a colleague at work. However, you weren't completely sure of the situation and found it impolite to inquire from Alexei. Being certain that there is a problem, you are expressing your concern and well wish for Alexei's girlfriend and her family.