A weed is just a plant that is growing where you don't want it to. If you like this little guy, and have a place it can thrive but not cause damage - it's a flower, not a weed.
I have a HUGE weed in my front yard - a 4 or 5 yr old oak. ha ha
I can't tell from the photos. Does it have any smell? Marshall is good at identifying odd things. Maybe he will know. First I thought it was creeping phlox, but that lacy lower foliage doesn't look like it, I don't think.
It does not have a smell, not that I can notice. I think I will keep it in the pot for a while, see if it starts growing better so I can get a better picture. I've been searching the yard for similar plants but haven't found more so far.
lol, canesisters that's almost exactly what my mom told me.