We dated five times, and are happily married …. years later and … kids!
In the UK it seems to be the norm to date between 4 and eight times. The overall census there seems to be that if you have no reason to say no, then go for it. If you have a reason to say “no” then say it and move on. If you have doubts, then go meet again to clear up your doubt either way. If you have no doubt and no reason to say “no”, there is no mitzva to prolong the process. Say “yes”, drink a l’chaim, and live happily ever after!