A non-exclusive relationship. Can involve people being honest and on the level with each other, or cheating on or lying to others.

It can be a positive relationship where people who don't want to be alone, but aren't wanting or able to be in a full-time/exclusive relationship, can have a friend to do activities with. It can be sex based, or include other activities and sharing. It can be more than just a friends with benefits relationship as well.

It can also be a negative relationship, where one is cheating or leading on a partner and avoiding being exclusive. It can be just about sex, it depends on the individuals involved.
After my divorce, and with kids and work, I don't want a guy around all the time right now, but I would like a part time boyfriend.
by PartTimer September 3, 2011
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Both parties are interested in each other and are "seeing" each other, but are not ready to be FBO. This will include not cheating on one another, nor getting upset if one dances with someone at clubs when the other party is not present. Both parties also will not be clingy.
What is going on with you and John, I didn't see you at the club the other night?

Oh, he is just my part-time boyfriend.
by gertrudecaroli March 16, 2011
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a guy who wants to be exclusive and have all teh perks of having a girlfriend, but who doesnt want any of the responsibility, like doesnt want to buy presents on birthdays or meet each others families or spend the week ends together. They are happy to be part time...
So it's you and your boyfriends one year, are you doing anythign special?
obviously not he's a part time boyfriend he can't be bothered.
by yesgirl223 July 13, 2010
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A part time boyfriend is someone who only messages confessing he likes/loves you when he is bored or his other girl(s) are busy.
“Josh texted me again lastnight saying he loved me and wants to take me out to dinner!”

“Seriously he doesn’t actually love you, hes a part time boyfriend. Briana is at her parents cabin for the weekend and has no singal. This is why hes messaging you. Part time boyfriend!”
by Hunnybunnysasylum September 30, 2018
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A part time boyfriend is someone who claims he really likes/loves you and gives you loads of attention om certain days. Often when he is bored or his other girl(s) are busy.
“Josh finally texted me back lastnight after four weeks saying how he loves me!”

“Seriously get over him its only because Briana has gone to her prents cabin and has no signal. Hes your part time boyfriend, there when it suits him”
by Hunnybunnysasylum September 30, 2018
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