shall i tell her or not????

It's hard to be honest with someone if it's not safe for you to do so. Her possesiveness is caused by insecurities. The only way to help her heal from these insecure feelings is to be honest. Your past is what makes you what you are today. If she really wants to know you, than she should accept your past as well.

express now itself.. dont neglect that.. u have to be expressive abt this.. make her happy by doing the things which she like the most.. are u great ;lover?

Principally what one did in past, should not concern to the present one but in this practical complex world of relationship, it's better to tell about your's past relationship, to your's current woman, who obviously, as you have said is so possessive that even you are not comfertable with it. I dont understand your's fear of loosing her? Do you thing if some one who is so possessive(to me this strait is very uncomfortable for a long term relationship) ever come across with your's past. will she be very kind to you? No way, an over possessive partner will drove and drill you to the edge. Its better to let her know now, so that you can enhance yours self esteem too and risk the chance of loosing her know and move on with life or living in fear and panic with her.

i think you must be honest to your spouse. unsure that she really loves you, maybe she can be understand and accept you whatever you are. You not to be scared, trust her. her age is 3 years older than you, I think she can be wise.