It is revealed in a teaser that Alec keeps calling Magnus, but keeps hanging up whenever
Magnus picks up. This, eventually, results in Jace breaking Alec's phone in order to get him to
stop. It is also implied that Magnus is just as miserable over his break up with Alec when Jace
goes to confront Magnus. Jace bluntly points out that he is obviously unhappy, since his
apartment is a mess and he has takeout containers everywhere, clearly gorging himself on take
out food.