Just go for it.
Not every single mother is looking for a stepdad.
More than a few keep their dating and family lives separate for quite a few different reasons, be it "I can raise them myself" or "I only introduce my kid to people if it's serious" or whatnot.
Plus there's a difference between a single parent with, like, a toddler and a six month old infant versus a sixteen year old.
Nothing ventured, nothing gained, might as well see what happens.
He/Him http://guidesmedia.ign.com/guides/9846/images/slowpoke.gif https://i.imgur.com/M8h2ATe.png
https://i.imgur.com/6ezFwG1.png