Lover boy update

Haven't heard from him in weeks, but felt mellow this morning when sending off all those Valentine-greetings, so included him in the list. He immediately called back. This is not the first time it happened, that I make contact via sms and he phones up, kind of a reactive approach.

Says he's coming to Zürich in three weeks time to stay. So need advice. Should I dump him now, or give him another go?