I'll start this by quoting some nice words, wrote by someone whom is defining jealousy like this...
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"Jealousy can be unhealthy or healthy, depending on motivation. Unhealthy jealousy stems from fear, insecurity and deception. When you feel acting out in jealousy, you need to examine the reason why you feel jealousy. Before you let jealousy creep into your chest stop, think, and discern the source of jealousy. Once you discover why you are jealous you need to deal with the issue. Jealousy is not a bad emotion/feeling."
by Lirio Y. Lomarda
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And there i go now talking about what is basically the most common thing in a relationship and how That can ruin your entire relationship pretty fast(depending from case to case). Many people think that Men do act like that most of the times or they usually show off more but in my opinion the ladies are doing the most significant things after which in most cases the relationship just goes poof. And some examples, like what ladies can do when they are extremely jealous.
--- Wants to go out with you anywhere, anytime, no matter what!
(Going out with your buddies for a beer. + GF? = No fun & Awkward.)
--- Should be able to read all your messages off phone/e-mail/post mail!
(What if you and your buddies send each other kinky jokes and stupid but funny jokes about sex or anything related with such. = No Fun & Awkward.)
--- Calling you every 30/20/10/5 minutes to check where are you and what you are doing.
(What if you're in a big meeting at work and she just doesn't stop doing it, over and over again until you answer! = Extremely Annoying & Awkward!.)
--- Should be able to slap you off your shoes anytime, anywhere, no matter what!
(She doesn't care if you are dinning in a restaurant or you two are in a place crowded/full with people or just in front of your buddies, she just can't wait until you do a mistake so she can slap you since she doesn't really care how many people are around nor any, in fact the many they are the better she feels about it! = Extremely Awkward!)
--- You should never look at/nor salute/greet any other Woman while you're with her on the street!
(What if you might meet with one of your female co-workers, you just pass by and pretend you didn't even saw her? without at least saluting/greeting her just because you're with your GF? = Disrespectful & Awkward. If you do salute/greet that Female Co-worker you'll end up answering 234324 questions just to feed her jealous curiosity.)
--- Open agenda at all times for any reason even for the smallest possible things!
(She doesn't care if you wanna go out with the boys, wanna watch your fave football team match or just have some time for yourself. = WTF? O.o)
And all those were just SOME, just a small amount of examples i could think of right ATM. Now ladies why are you shocked/confused when you hear that guys are afraid of marriage? and you don't ask yourself WHY? well that's because most of you ladies don't realise any of that or at least don't see them in the same colors we do and for sure not feel them alike. Of course there are people whom "like" or accept all those examples having their own reasons like not wanting to be alone so they accept anything that can lay their hands on nor they have other options ATM.
In my opinion a Relationship should be based on Trust, of course you might say that you need time to gain that Trust, THEN wait until you get everything straight, don't just wait 1/2/3 weeks/months and then just fly in the Church in a big hurry to marry if you haven't even passed that kinda of test otherwise you're just going to a dead-end or it won't last. Another thing that should be stated when you engage into a relationship is to explain as detailed as possible your "Things", ask to have your personal space & time, otherwise if all these are not known from the start, after that it doesn't even matter anymore, that's why you need that time to talk, explain and learn to accommodate with both of your fave. things to do, before you jump to the next level, or possible the most serious like marriage.
Now a tip for the boys,