Calculates the number of days, weeks, months, and years in between two dates, and translates the days to hours, minutes, and seconds. Faqs include answers to questions like how many weeksmonths in a year? How may days have-passedare-left this year? What date is it? Daysweeks to christmas? after all, if you have been on 3 or 4 dates, are you technically allowed to be seeing someone else without being in violation of some relationship rule that you think is unspoken? Good question. So, how many dates before calling your relationship a relationship? Follow the 10 date rule. Calculate the number of months between dates with this how many months since calculator tool by just selecting the start date and the end date. The number of months between the two selected dates will appear. Find out exactly how many months since or any other date in history with this simple months between dates calculator tool. Some typical uses for the date calculators api services for developers. i asked my friend how long hes been in a relationship, he told me 3 months. I then said i had been in my relationship for 3 months also, since . I was like nooo, youve been in a relationship for two months, you dont count it like march, april, may 3 months. or because youve been having sex every weekend for three months that youre in a relationship. heres how many times a week you should see each other when you first start dating. my boyfriend and i have been dating three years but the last four months have been rough. Since, ive been diagnosed with anxiety and believe this to be the root of most of our problems.