Re: Valentine’s Day
Guru Gobind singh wanted casteless and class less society, all religious leader of worlds were always socialists. In lohri people assemble at one place and make a bonfire, where young ladies and gents also dance together so it is quite an indirect way of impressing each other. this is the reason it had romantic undertones. You might have seen this in the movie Veer Zaara as well.
Holi was played by Bhagwan Krishn with Raadha and other gopikas, hence it also has romantic connotations.