It is not illegal to have live in relationship or have children in such relationship. Unless there is proof that marriage is solemnized 494 is not going to work. Evidence of him having baby is good evidence, but it is not useful to cancel bail in 498a case. 498a is based on allegations of cruelty connected with dowry demand, it is different matter. Moreover cancelation of bail can be won only on grounds that he is tampering with evidence or absconding from trial etc. Him moving on with life with another woman has no connection with his bail.