I want to pretend to be my husband and send a short message to San Xiao to test whether they are really broken, is that ok?

Of course you can do this, but you should also be mentally prepared. If it is not broken, you should figure out how to deal with it, because many similar problems, even if you promise not to contact, or when the threat from the third party is not great, the third party will not be willing, and the contact will still exist intermittently. Your temptation is definitely not the solution to the problem. If you really want to solve the problem, you must stabilize the internal relationship and let your lover really return to the body and mind. This is the real security.