Prince Harry and Cressida Bonas Are a "Great Fit," She Already "Has a Load of Stuff at His Place"

"They‎ are clearly crazy about each other," a source tells E! News exclusively

Prince Harry and Cressida Bonas are already playing house!

As the world waits for another royal wedding (no pressure, Harry!), a source tells E! News that the private pair are stronger than ever. "Harry and Cress are just a great fit—she just fits into his life, with his friends. It's all been really easy," the source says of the British royal, 29, and Bonas, 25. "They spend loads of time together, she has a load of stuff at his place and they're really relaxed and comfortable."

Perhaps that comfort explains why Harry isn't rushing to propose. Even so, he has become increasingly comfortable stepping out in public with Bonas, whom he met through Princess Beatrice in 2012. Just last month, Bonas attended her first official royal outing when Harry spoke to 12,000 young people.

Could Harry and Bonas more frequent outings indicate an inevitable engagement? "They‎ are clearly crazy about each other and privately his friends are sure it's going to last, but they're super private about that question," the source says of the London-based couple. "Friends know better than to ask."

If all goes according to plan, however, they won't feel the need to ask much longer.

Last month, an insider told E! News that the low-key loves had "made a point of talking about marriage and what changes they're going to have to make to their life" if and when a proposal should happen.

"Up until now Cressida has loved the fact they can have a lot of freedom in public," the royal insider added. "But they are fully aware once they decide to proceed to marriage things will get a little crazy and the attention on them will increase."