Here's the deal (this is what I tell and have told my kids): don't have sex unless you can picture yourself having a child; don't have sex with anyone you can't picture yourself married to and having children with; if you "yep, I can picture it" on both counts (after long and careful consideration!), then ok, but if you do get preggers do the right thing, get married, and have that family. Ideally, you wait until after your married to somebody you can see yourself with for the rest of your life, but sometimes things aren't ideal; just do the right thing and don't be selfish, especially with your kid.