Actress Hilary Swank has shared news of her engagement to tennis coach Ruben Torres on Instagram.

The Oscar winner, who has been dating Torres since July last year, broke the happy news with a sentimental post on Wednesday morning (AEST).

The couple at a dinner at The 2016 BNP Paribas Open in March. Photo: Getty

• Affleck on marriage split with Garner
• Sylvester Stallone is back – and he’s spectacular
• Sean Penn interviews ‘El Chapo’

“Went on a hike and this happened!,” wrote Swank alongside an image of herself, Torres and an emerald green engagement ring.

“I am so happy to share with you all this exciting and incredible news … the engagement to my dear Ruben!!!”

Swank also posted a shot of the pair sharing a kiss on Twitter, with the hashtag #SealedWithAKiss.

The pair has been open about their intense love affair, getting close at a New York Nicks games and at a red carpet event for Art Basel in Miami.

It will be the second marriage for Swank, who was married to fellow actor Chad Lowe from 1997 to 2007.

The actress has been taking time off from acting to help take care of her sick father, but was recently announced as a voice in the upcoming animated feature Spark.

Sooooooo this happened!!! #heputaringonit LOL #loveisintheair pic.twitter.com/X8nEf6ETq4 — Hilary Swank (@HilarySwank) March 22, 2016

And then this happened….#sealedwithakisspic.twitter.com/lk4vgjXb2M

— Hilary Swank (@HilarySwank) March 22, 2016