on satya yug/ kali yug- Ram aged 16 married Sita when she was 7. Parvati was also very young when she got married to the angry old Shiva. So, it is not kali yug to be romantically involved with someone 8 years younger than you. And as for all the doctors of reality- check the age difference of your grandparents and in some case your parents. Also, these hollywood bollywood people are also real and their marriage is also real. So, mainhoonna-"khamosh kyun ho jo bhi kahenna hai kaho; dil chahe jitna pyaar utna mangalo". Go for it.