Affair outside marriage without sex - Is it possible?

I really don't believe that an affair outside marriage can last more than a few months without sex. The reasons for the same for men & women have to be looked at separately. FOR MEN : I really don't t
_

Mertie:
My boyfriend has been asked to be his female friend's maid of honor?
(4 February 2019)

Mertie:
I know that girls do this with their male friends sometimes, but it is odd to me that she chose my bf, and not his sister because they are friends too?
(4 February 2019)

Mertie:
She is getting married to her fiance soon which is great, and my bf said that he wants me to go to the wedding with him. . My only issue is that I somehow found out that she wants my boyfriend to be her made of honor.
(4 February 2019)

Mertie:
My bf never hangs out with her alone to my knowledge, and I told him if he did I would be very upset about it.
(4 February 2019)

Mertie:
I'll call her Molly . They hooked up a long time ago, and their friendship has remained platonic over the years, (which I'm kinda okay with ) My bf's sister,is also friends with Molly , and they have been going out together before I came into the picture.
(4 February 2019)

Mertie:
My boyfriend has been friends with this girl for 10 years.
(4 February 2019)

Ronnie:
Is my girlfriend more important or my closest friends?
(4 February 2019)

Ronnie:
Don't get me wrong, I love my girlfriend to bits, but I have known my inner circle of friends more than my girlfriend by about 8 years.
(4 February 2019)

Ronnie:
They have calmed me from depression and stayed by my side after I considered self harm.
(4 February 2019)

Ronnie:
They have supported me constantly by giving me advice to start dating my girlfriend.
(4 February 2019)