Why i gotta pay him ?

me and my husband had a brief marriage like six month due to his drug use i have moved eight states away four years ago i got in the mail he is takin me to court for spousal support due to him gettin on welfare he never told me this before i got the paper work.and we do talk regularly can he do this i have court in august to come back to pa and appear and to bring all pay stubs for the last six months we have no kids at all to gether can he get away with this we have been seperated for six years