Jennifer Love Hewitt

A day after they announced they were expecting their first child together, Jennifer Love Hewitt and Brian Hallisay have also revealed that they're engaged.

Hallisay proposed in late May while the couple was on vacation in Europe, according to Us Weekly, which reported on Tuesday that Hewitt is around three months pregnant with the couple's child.

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"We're so thrilled and happy to start a family," the Client List co-stars told Us.

Hewitt and Hallisay met when they starred together on NBC's short-lived series Love Bites, which was canceled in 2011. They reunited for Lifetime's The Client List and began dating 15 months ago, Us Weekly reports.