Fealing ignored & jealous - love? Of it?

When you said you used to chat with a girl, was it a committed relationship or just friendship? Which was not clear in your statement. Friends come and go in one's life as they are all undefined relationship and there can be no obligation as such in all friendship. You may have to first introspect yourself to identify this. You are probably possessive of that girl, hence jealous when she is close to other GUYS and not GIRLS. There may be feeling of liking or love towards her; if you are able to do a self-assessment, you can talk to her assertively about your feelings. If you feel that you are not possessive and it is just a feeling of jealousy you have the rights to take your decision and move on in life. There are other priorities for you which may be burning issue on hand (i.e. your academics, career, family related challenges so on and so forth). List out what is very important and urgent now and work on those, than running in circles without any purpose of goal in life. Maybe, consulting a Counsellor in your city will give you more clarity to handle your life better.