Well I think you should consider the child that you may be bringing into the world first.
A lot can change in the future.
Ask yourself if you could be parted from that child, and would it finish up living in poverty and without a father.
Could you live with that ?
If it were me (and it has been), I would not contemplate under any circumstances bringing a child into this world in such shaky circumstances.
Call me old-fashioned, but I also think it's only doing the decent thing to marry, and to give your offspring your surname and right to a British passport.
If you've been living in the Phils you'll realise that there are quite enough single mothers and children in poverty already.