Dimitrios Kambouris/Getty; Julian Finney/Getty Eiza González admitted that she is "definitely not getting better" at playing tennis as she continues to date Bulgarian tennis pro Grigor Dimitrov González toldExtraatFountain of Youth's May 19 New York City premiere that she is "just super grateful for him" days after the couple made their public debut together "My backhand's not as great as his, so I'll try to take some classes before trying to show him," the actress said Eiza Gonzálezis smitten with her tennis star boyfriendGrigor Dimitrov— but she's hesitant to play the sport with him. González, 35, toldExtraat the New York City premiere of her new movieFountain of Youthon Monday, May 19 that Dimitrov — who shewent Instagram official withon May 17 — is "waiting eagerly" to see the film. "He's so sweet. It's so nice. He's always so supportive of me and he's very excited," González said of the Bulgarian tennis pro, 34. "He's obviously at a tournament right now, so he can't be here. But yeah, I'm just super grateful for him." "Oh my God, not really," she said with a laugh, when asked if her tennis skills have improved since the pair began dating. "I took lessons when I was young and I'm definitely not getting better, and I'm avoiding the whole, 'Let's go play together.' I'm sort of like, 'Yeah, sure! Later. I'm just not feeling it today.' " "My backhand's not as great as his, so I'll try to take some classes before trying to show him," she added. Arnold Jerocki/Getty González and Dimitrov first sparked romance rumors in April after they werephotographed holding handswhile out together in Madrid. Days earlier, she was seen attending one of Dimitrov's matches at the Madrid Open. The pair made their public debut together on Instagram on May 17, when they shared a joint post toInstagramthat also served as González's tribute post to Dimitrov for his 34th birthday. Never miss a story — sign up forPEOPLE's free daily newsletterto stay up-to-date on the best of what PEOPLE has to offer, from celebrity news to compelling human interest stories. Hoda Davaine/Getty "Happiest bday to the man of my dreams," González wrote in a caption to her post, which displayed photos of the couple at the Red Sea Film Foundation's "Women In Cinema" gala in France on Thursday, May 15."@grigordimitrov you're one of one. You truly are my absolutely favorite human, and I can't believe I've been lucky enough to find you. You've restored so much in me I didn't think was possible," González added in that caption. "To the kindest most thoughtful and caring man. I admire every inch of the human you are and are becoming. I cannot wait to celebrate many many more. I love you G. ❤️" González's next movieFountain of Youthhits Apple TV+ on May 23. Read the original article onPeople