In other words, they think you"re a giant pussy, willing to roll over and would love to raise someone else"s kid while the father gets to continue going out, partying, and making more baby mommas while you stay at home reading bedtime stories.
Reality check, your sister and her boss don"t respect you.
If they tried to set you up with the chick because she was awesome, they would have hidden the fact that she was a mom from you until like, the day before you met her or something. Instead, they think that you can"t do any better on your own. I"m not saying it"s true, I"m just saying, that"s what those 2 women think of you, that"s how women operate.