Will Calvin Harris pop marriage question to Taylor Swift soon?

If sources are to be believed, then Calvin Harris may soon pop the big question to Taylor Swift.

Insiders revealed that the 31-year-old DJ, who has been dating the 25-year-old songstress since March, is preparing to get down on his knee with a 1.4 million dollars engagement ring by the end of October, reports the Mirror.

The duo has not commented on the issue yet.