If he loves her, he will come back for sure. If he doesn't love her, he won't come back. So, Alex, the best thing is not to message her again and let's ask someone to flirt with him. and if he flirts with her, then tell Sofia that he's flirting with gals and tell her that he doesn't love her.
Wow, how many conditionals can you get in one short text! There may be a mistake of fact in the second sentence but i am not sure as it is quite dense language.