That 3-7-10 rule sounds like PlentyofFish habitual dater practice to get free dinners. But if you feel real chemistry 3 dates is a good number.
One of my friends taught me a valuable lesson when it comes to physical intimacy and new relationships, shecalls it the 3-7-10 rule here it is:
Give it at least 3 dates before deciding whether or not you see potential in something long-term, IF there is a major argument/fight that turns into a huge drama fest, is not resolved quickly or is handled immaturely before the 7th date- get away quick, and no sex before the 10th date. People adapt these to suit their own needs but generally followed they tendto work well to build a solid foundation for a beginning relationship good luck!
honey there are no limits to dating b4 going to bed with him so no need to rush if he’s really into you he can wait and if not then get rid of him bcuz he’s probably waiting for you to put out and then dump you so be carefulon making your decision