i think it is important that you stop being an absentee Dad. She doesn't see you as an essential part of the family, except as a breadwinner. You need to be more than that. You need to establish a pivotal role within the house. FB and some peripheral female attention may help to activate her jealousy, but she probably has herself convinced she wouldn't care if you had an affair either. I think you need to let her know that you are not getting pushed out of the nest.