Forget a championship ring! Khloé Kardashian’s boyfriend Tristan Thompson has his eye on engagement rings! The Cleveland Cavaliers star may not have won the NBA Finals back in June, despite his Kardashian cheer section, but that’s not stopping the 26-year-old from ring shopping for his reality star girlfriend.

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“They’re talking about getting engaged by September,” an insider told Life & Style exclusively of the couple, who started dating in August 2016. And, from the looks of Instagram, the duo is more in love than ever. Just this past weekend, KoKo confessed her love for the athlete in a poolside snap.

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❥ իմ սեր ❥ Im ser ❥ All my Love ❥

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Captioning it in three different languages, the fitness enthusiast made it clear that their relationship is getting super serious. In fact, Tristan has turned to Khlo’s siblings for help in picking out the perfect ring. “Tristan has asked her sisters what kind of ring she’d want,” the insider added, “and he’s planning a very romantic proposal.”

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This major move may not come as a surprise to KUWTK fans after Khloé, 33, admitted in a recent episode that Tristan wants a big family. “Tristan and I definitely talk about having kids,” she said. “He wants to have five or six kids with me and that’s lovely. We could start at one and grow from there.” Tristan is already dad to a seven-month-old baby boy named Prince, who he welcomed with ex-girlfriend Jordan Craig last year.

Khloé recently admitted that she halted her birth control after doctors recommended she stop taking oral contraceptives to increase her egg count. “Now knowing I’m not on birth control is just like — it’s scary,” she confessed. “It’s like a really big step.”

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Take a look back at Khloé and Tristan’s cutest moments in the gallery below!