I didn't realize that 2E was open again
I thought it wasn't supposed to open until later in the year.
The new Air France L'Espace Première Lounge is supposed to be in the new hall there.
IF not there then it is still located in Terminal 2C outside the customers area, opposite gate C2.
Both the Sheraton and the Hilton Hotels at the airport are right there within the airport and provide free shuttle services.
There is an SNCF help desk on the fourth floor of Terminal 2. If you are planning on taking a train into the city - or beyond - your partner will have to come to terminal 2 anyway... that might be where I would meet him.
The real problem is that you will probably have to keep your baggage with you - for security reasons they removed all the storage lockers a few years ago. If you are flying business class or better though the Airline should manage your luggage for you.