First Marriage (Season 1): I fell in love with my college girlfriend Carol, but unfortunately, in the seventh year after marriage, Carol realized that she was a lesbian, so she dumped Ross and moved in with another woman, Susan! Ross is depressed, but he can only accept the divorce. However, after the divorce, Carol found out that she was pregnant with Ross's child, so Ross, Carol and Susan staged all kinds of jokes around the birth, raising and naming of this child.
Second Marriage (Season 4): After the relationship between Ross and Rachel ended, she met an English girl Emily in Season 4. Emily was cheerful and generous, and Ross soon fell in love with her. After dating for some time, they are going to talk about further relationship. They originally just wanted to live together, but they decided to get engaged and get married! It only takes more than a month from engagement to marriage. Old friends were surprised, but Ross explained that although it was a bit hasty, everything felt right at the moment. Ross just doesn't know that Rachel still loves him. Not only that, he didn't realize that he still cared about Rachel. So in London, at Ross and Emily's wedding, Ross called the bride's name Rachel by mistake! As you can imagine, the second marriage was also … Sure enough, in the first few episodes of the fifth season, he divorced Emily.
The Third Marriage (Season 5): In the last episode of Season 5, six friends go to Las Vegas together, and Ross and Rachel start playing tricks on each other. Later, they got drunk and made a decision: get married in Las Vegas! And invited four other friends to attend the wedding. Obviously, this is a drunken "trouble", but it is still legal and effective to tell the judge about the wedding! After waking up, Rachel regretted it and urged for a divorce, but Ross put it off because he didn't want to be labeled as a "divorce expert". Of course, this is only one of the reasons. On the other hand, he still has feelings for Rachel in his heart.