Stop right now! You are very aware of your ethics and moral notions in your society. Where are your ethics? This is the first question. It is not natural love relation with the other person.
However, according to your religion and cultures you could marry your aunt, if she was in-direct aunt (i.e. your father's in direct sister and your mother's in direct sister). These are the sisters who are daughters to either your dad or mom's uncles.
As long as you need help with this, that means your conscience is not yet dead. You'll not live after it, as thinking of your aunt that way is sinful, let alone making love to her. Could you think of your mother, or your sister the same way?
You need psyche help in your area to solve this Oedipus feeling with ancestral love. But, you should make sure that you psychiatrist is good enough to get you through it.
Despite this, you have not provided good information about you to know your origin in Sudan. Names for example indicate culture and we think that, "Mido" is not your name. You could provide a similar nickname for example to reveal that culture, so we could understand the circumstances.
This is because in the southern part of Sudan, you could even marry (inherit) your father's wives when he dies.
You aunt should have felt the sinful attempt and she be wiser not to accept such forbidden love relation, unless, as I mentioned she is not a direct aunt.
You should have followed the guidelines on the main pages about love consulting to write good request full of information. It isn't necessary to provide real names (only in this dangerous love matter), but you could have chosen to write nicknames.
We neglect incomplete love consulting request, per the guidelines, although we could get to them very later on to get them published, as they have (when reedited some other values).