I need help...........?

i need help on this. i have a 4 week old son hu my ex gave birth 2 . we split up because her dad tried 2 beet me up (he hit me wiv a pool cue but i gt the winning result) n e ways we recently discovered that we still love each other and want 2 make a go of things again but the thing is both of us will loose our families over this..... i have a 5yo daughter frm a previous relationship and im currently living with her mum.... but i want to make a go of things with my ex again i dnt know what to do as i dnt want 2 loose my family. im in a no win situation and im nt askin 4 an answer im askin 4 advice..... please please can someone come up with a solution....