you said she doesn't flirt with others...ok we agreed..but that doesn't mean that she loves you the way you love her...there are many ppl who are not...
This is a normal story... happens with most of the people..the final outcome depends on the individual.. some live with it for their whole life, some...
Dunno why people felt this query is fake.. they need to think out of the box and their country. My suggestion to the asker is- she is a confused teen...