It is not unusual for there to be conflicts in life, and for us to have obligations to different people which cannot be reconciled. In that sort of situation you should expect whatever decision you take is going to leave you with regrets and doubts about whether you have done the right thing. I understand how guilt can arise here, and how inevitable such feelings are, but what is left out of your account is what would make you happy. You do have a duty to listen to the concerns of other people but many philosophers would say that you also have a duty to yourself to be happy. You might want to think seriously how in this situation your happiness is going to find a place, since it seems to me that the desire to be a martyr is likely to satisfy no-one in the long run.
Read another response by Oliver Leaman
i loved a guy since one year..i felt he was my life and god.i was so true to him and so he was.we were physically close.we had many dreams about our future,kids,etc.but an unexpected incident happened.his father came to know about our affair.he was completely against our marriage.he threatened his son that he would send him out of the house forever and never talk to him in his life time.we had no choice, but to break. all my dreams were shattered.if i remain unmarried in my life, i would suffer from lonliness, so , i decided to marry the guy shown by my parents(arranged marriage, as i am an Indian girl). Now the problem is, i am guilt struck , i feel that i am cheating the guy whom i am going to marry.i wont reveal to him about my past affair. He marries me with trust onn me and my family.but, i don’t deserve his trust.i feel that moving closely with a man other than my husband as a sin, but everything was unexpected. I believed strongly that i would marry the person i loved, hence i was close to him physically. But i feel guilty that i will certainly cheat the one i am going to marry. Help me please.. what should i do to this guilty feeling?