Whoa, I really wasn't expecting that...! I hope that the next chapter will also deal with the plot rather than letting it wait as before.
will Keiko end up with this guy
Well, I don't think that Keiko will end up with this guy again.
I don't think that's going to happen either; I think Keiko needs to get over what happened in the past, rather than return to it. Also, judging by Ran's reaction, I don't think she'll be very happy if he gets together with Keiko again - maybe it's just my yuri goggles, but it seems to me that she would be displaced by such a relationship.
I look forward to the next chapter, as always.