What decision should i take?

i m in an affair with girl.she is my distant relative also..her parents are v. close to my family.the pbm is that we are of same age.(24 yrs).i just finished my engineering.(i m a dploma holder too)but i ***** pass all papers of engineering yet.She is getting proposals and her parents are considering them seriously. till now u read is a common pbm,but for me the pbm is abt my complex and attitude.i dont know how to overcome it.i am a single kid to my family.even in 24 , i m looking so young like a 18 year old boy.And my complex is that I have not yet get a job..i know her parents are looking for a groom who has a good job..i only have a diploma and a course complted certifaicate of engineering..i dont hav courage at this stage to explore my love infront of my parents bcoz i fear how wud they react when they knowing this relationship...my complex abt my look is also pulling me backwards,because i fear her paretns wont accept me as husband of their daughter..I was well aware abt these pbms but i ***** succeed to make her convince by explaining these..still she is thinking very positive that she will get me and she says she can live with me happily even at very small income.And if she ***** get me,she says she wll comit suicide .but still i am confused..the truth is that i cant leave her..i know i m talking like a fool..but i hope some one can really understand me and help me to take a good step..