Maybe its cause he reminds her of Pratap...or maybe its cause she is a teenager and falling in love is oh-so-easy for teenagers!
Whatever it maybe I hope the creatives show some restraint and have them committed only after they are adults!!
I also think Shyam is Madan Singh's relative...since he is shown to be rich now, the only other family other than Jagya's that have some clout is Madan Singh's family!!