By Marisa Spano

We would like to hope that Jared Harris is not mad, but rather blissful! The former Mad Men star, 51, is engaged to beautiful, longtime girlfriend, Allegra Riggio. Harris’ fiancé could not hold herself back from the excitement and posted a Vine video of her heart-shaped Erica Courtney sparkler, reported People. According to a release sent out by the jeweler, the heart-shaped diamond rose gold engagement ring was custom designed. That’s enough to drive any girl mad.

How do you know what engagement ring to get for your bride-to-be?

Cupid’s Advice:

Finding the right ring is a long and hard process. Cupid is here to help:

1. Pay attention: There are a lot of choices out there! Look at what your sweetheart wears on a daily basis. That should give you a clue of her style.

2. Bring a friend: Don’t go to the jewelry store alone. There are going to be way too many choices. If possible, maybe even bring your love’s mom with you. Mother’s know best.

3. Do your research before: before you even set your foot into a store be sure to read up on diamonds. There are a lot of things to know and if you go without any knowledge you are almost guaranteed to do wrong.

How would you get the perfect ring? Let us know below!