Then do the pre work to be able to follow either path.
If it is separation. Get all finances in order. Figure out bills etc... Get snapshots of everything and be prepared to separate it all. Start on the co-parenting plan. Figure out communication etc... Write it out how you want it and be fair and honest.
If it is getting back together to work on it.
Then you need to list what needs to be done to regain your trust. And how you want to work together to repair the damage.
Flowers always make people better, happier, and more helpful; they are sunshine, food and medicine for the soul. unconditional love is awesome!