<human>: Summarize the given text in a few sentences.

Hi. In short, the situation I am in is this: 

I hooked up with a girl a few times about 2 1/2 years ago, and one time we did not use condoms (she had said she was on the depo shot). The relationship floundered soon after. We were not that serious anyways. Now she has a kid and is coming after me for child support. I'm fine with supporting a child of my own, it's under no dispute now that the kid is mine since DNA testing proved so.

I've been in a relationship with a loving, caring woman for over 2 years and we're engaged, and going to get married in June. Things are awesome between us except for the wedding stress and work stress, which I guess should be considered normal. 

I didn't tell my fiance about the DNA test, since when I was contacted about it, I was sure it wasn't my child(ex claimed to be on birth control). Now that the DNA testing has came back and they motioned for child support, I need to tell my fiance.

I've been scared and visibly stressed out by this. I don't know how to tell my fiance  about this, and how she'll take it. 

Guys/gals, how should I break this news to her? How should I go about informing her that my salary is going to be cut by almost 30%? 

Do you think she'll still want to marry me? 

Should I attempt to have a relationship with the child? My ex has stated that she wants nothing to do with me.

Please help. I don't know what to do! :'(
<bot>: Ex-gf came forth that she had my child, and I'm about to marry someone else. How do I tell my fiance?